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Vulcan Seals Type 678 Grundfos®
Phone : +44 (0) 114 249 3333
Email : contact@vulcanseals.com

Technical Data Sheet

Product Description

Standard Face Material Combinations

Rotary Face
Stationary Face
Complete Seal Code

Elastomer Temperature Capabilities

Minimum
Maximum
Pressure:  

Mechanical Seal Equivalency

Phone : +44 (0) 114 249 3333
Email : contact@vulcanseals.com

Dimensional Data

Phone : +44 (0) 114 249 3333
Email : contact@vulcanseals.com

Maximum Operating Pressure

PV Chart

Application Conditions

Criteria
Multiplier
Product Fluid
Lubricating fluids
X 1.00
Aqueous solutions / Water
X 0.85
Temperature
Below 70°C (158°F)
X 1.00
71°C to 120°C (160°F to 248°F)
X 0.85
121°C to 175°C (250°F to347°F)
X 0.75
Over 176°C (349°F)
X 0.60
Speed
Up to 1750 rpm
X 1.00
1750 to 3600 rpm
X 0.80

Face and Seat Materials

Combination
Multiplier

Example Calculation for Vulcan Seals Type 678 Grundfos®

Guidance Only

Product Data Sheet

Vulcan Seals Type 678 Grundfos®

Vulcan Seals Type 678 Grundfos®
No items found.

The Vulcan Seals Type 678 is supplied with an Allen key and plastic setting shoe to aid in setting the seals at the correct working height during installation. Vulcan Seals Type 678 screw (12 and 16mm) or push-fit (22mm) semi-cartridge seals to replace Grundfos® “H” code seals; installed in CR, CRI, CRIE, and certain other series of vertical multi-stage pumps.

The Vulcan Seals Type 678 is a robust bidirectional seal design with a positive drive to the rotary head, and features seal face materials intended to maximise performance in poor lubrication situations frequently associated with hot water vertical circulating pumps.

Why Choose the Vulcan Seals Type 678 Grundfos®?

The Vulcan Seals Type 678 features the wave-spring and energised ‘O’-ring technology of the Vulcan Seals Type 1677M and has superior design characteristics compared to the welded, single-spring original seals.

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Specifications

Standard Face Material Combinations

Rotary Face
Stationary Face
Complete Seal Code

Standard Face Material Combinations

Elastomer Temperature Capabilities

Minimum
Maximum

Pressure Capabilities

Pressure:  

Dimensional Data

Vulcan Seals Type 678 Grundfos®
DØ (Metric)Size CodeD1D4DINS L1DINL L2DINL Slot WidthDINL Slot Depth
10010021.0016.426.6010.004.005.00
12012023.0018.426.6010.004.005.00
14014025.0020.426.6010.004.005.00
16016027.0022.426.6010.004.005.00
18018033.0026.67.5011.504.005.50
20020035.0028.67.5011.504.005.50
22022037.0030.67.5011.504.005.50
24024039.0032.67.5011.504.005.50
25025040.0033.67.5011.504.005.50
28028043.0036.67.5011.504.005.50
30030045.0038.67.5011.504.005.50
32032048.0041.67.5011.504.005.50
33033048.0041.67.5011.504.005.50
35035050.0043.87.5011.504.005.50
38038056.0048.89.0014.005.005.50
40040058.0050.89.0014.005.005.50
43043061.0053.89.0014.005.005.50
45045063.0055.89.0014.005.005.50
48048066.0058.89.0014.005.005.50
50050070.0061.259.5015.005.005.50
53053073.0064.2511.0015.005.005.50
55055075.0066.2511.0015.005.005.50
58058078.0069.2511.0015.005.005.50
60060080.0071.2511.0015.005.005.50
63063083.0074.2511.0015.005.005.50
65065085.0076.2511.0015.005.005.50
68068090.0080.511.3018.005.005.50
70070092.0082.611.3018.005.005.50
75075097.0087.611.3018.005.005.50
800800105.0094.712.0018.205.005.50
850850110.0099.714.0018.205.005.50
900900115.00104.714.0018.205.005.50
950950120.00109.714.0017.205.005.50
1001000125.00114.714.0017.205.005.50
DØ (Imperial)DØ (Metric)Size CodeD3L1No of Set Screws
inmminmm
0.37500950.74819.000.2957.503 x 120°
1001000.74819.000.2957.503 x 120°
1201200.82721.000.2957.503 x 120°
0.501270.82721.000.2957.503 x 120°
1401400.90623.000.2957.503 x 120°
1501500.94524.000.2957.503 x 120°
0.62501580.98425.000.2957.503 x 120°
1601600.98425.000.2957.503 x 120°
1801801.2231.000.2957.503 x 120°
0.7501911.2231.000.2957.503 x 120°
2002001.29933.000.2957.503 x 120°
2202201.37835.000.2957.503 x 120°
0.87502221.37835.000.2957.503 x 120°
2402401.45737.000.2957.503 x 120°
2502501.49638.000.34910.003 x 120°
102541.49638.000.34910.003 x 120°
2802801.61441.000.34910.003 x 120°
1.12502861.61441.000.34910.003 x 120°
3003001.69343.000.34910.003 x 120°
1.2503171.77245.000.34910.003 x 120°
3203201.77245.000.39410.003 x 120°
3303301.81146.000.39410.003 x 120°
1.37503491.8948.000.39410.003 x 120°
3503501.8948.000.39410.003 x 120°
3803802.08753.000.39410.003 x 120°
1.503812.08753.000.39410.003 x 120°
4004002.16555.000.39410.003 x 120°
1.62504122.16555.000.39410.003 x 120°
4304302.28358.000.39410.003 x 120°
1.7504442.36260.000.39410.003 x 120°
4504502.36260.000.39410.003 x 120°
1.87504762.4863.000.39410.003 x 120°
DØ (Imperial)DØ (Metric)Size CodeD3L1No of Set Screws
inmminmm
484802.4863.000.39410.003 x 120°
505002.55965.000.39410.003 x 120°
2.0005082.55965.000.39410.003 x 120°
535302.67768.000.39410.003 x 120°
2.1255392.67768.000.39410.003 x 120°
555502.75670.000.39410.003 x 120°
2.2505712.75670.000.39410.003 x 120°
585803.03177.000.39410.003 x 120°
606003.1179.000.39410.003 x 120°
2.3756033.1179.000.39410.003 x 120°
2.5006353.22882.000.39410.003 x 120°
656503.30784.000.47212.003 x 120°
2.6256663.30784.000.47212.003 x 120°
686803.42587.000.47212.003 x 120°
2.7506983.50489.000.47212.003 x 120°
707003.50489.000.47212.003 x 120°
2.8757303.7495.000.47212.003 x 120°
757503.85898.000.47212.003 x 120°
3.0007623.85898.000.47212.003 x 120°
3.1257944.055103.000.47212.003 x 120°
808004.055103.000.47212.003 x 120°
3.2508254.055103.000.47212.003 x 120°
858504.252108.000.47212.003 x 120°
3.3758574.252108.000.47212.003 x 120°
3.5008894.449113.000.47212.003 x 120°
909004.449113.000.47212.003 x 120°
3.625*9214.449113.000.47212.003 x 120°
95*9504.646118.000.47212.003 x 120°
3.750*9534.646118.000.47212.003 x 120°
3.875*9844.764121.000.47212.003 x 120°
100*10004.843123.000.47212.003 x 120°
4.000*10164.843123.000.5915.003 x 120°
DØ (Metric)Size CodeType 8STDType 8BType 12Type 12DINType 13Type 13DIN
D1L1D1L1D1L1D1L1D1L1
10010019.206.6019.207.1018.105.5021.007.0018.105.5021.007.00
110110--------20.605.50----20.605.50----
12012021.605.6021.607.6020.605.5023.007.0020.605.5023.007.00
130130--------23.106.00----23.106.00----
14014024.605.6024.607.6023.106.0025.007.0023.106.0025.007.00
15015024.606.6024.608.6026.907.00----26.907.00----
16016028.007.5028.009.0026.907.0027.007.0026.907.0027.007.00
170170--------26.907.00----26.907.00----
18018030.008.0030.0010.0030.908.0033.0010.0030.908.0033.0010.00
19019031.007.5031.009.0030.908.00----30.908.00----
20020035.007.5035.009.5030.908.0035.0010.0030.908.0035.0010.00
210210--------35.408.00----35.408.00----
22022035.007.5035.009.5035.408.0037.0010.0035.408.0037.0010.00
230230--------35.408.00----35.408.00----
24024038.007.5038.009.5035.408.0039.0010.0035.408.0039.0010.00
25025038.007.5038.009.5038.208.5040.0010.0038.208.5040.0010.00
26026040.008.0040.0010.0038.208.50------------
28028042.009.0042.0011.0043.309.0043.0010.0043.309.0043.0010.00
30030045.0010.5045.0011.0043.309.0045.0010.0043.309.0045.0010.00
32032048.0010.5048.0011.0043.309.0048.0010.0043.309.0048.0010.00
33033050.0011.00----53.5011.5048.0010.0053.509.0048.0010.00
35035052.0011.0052.0011.5053.5011.5050.0010.0053.5011.5050.0010.00
38038055.0010.3055.0011.5060.5011.5056.0013.0060.5011.5056.0013.00
40040058.0010.8058.0011.5060.5011.5058.0013.0060.5011.5058.0013.00
42042062.0012.0062.0014.3060.5011.50------------
43043062.0012.0062.0014.3060.5011.5061.0013.00--------
440440--------65.5011.50------------
45045064.0011.6064.0014.3065.5011.5063.0013.00--------
48048068.4011.6068.4014.3065.5011.5066.0013.00--------
50050069.3011.6069.3014.3072.5011.5070.0014.00--------
530530------------73.0014.00--------
55055075.4013.3075.4015.3072.5011.5075.0014.00--------
58058078.4013.3078.4015.30----78.0014.00--------
60060080.4013.3080.4015.3079.3011.5080.0014.00--------
630630------------83.0014.00--------
65065085.4013.0085.4015.3084.5011.5085.0014.00--------
68068091.5013.7091.5016.00----90.0016.00--------
70070092.0013.0092.0015.3089.5011.5092.0016.00--------
75075099.0014.0099.0015.3094.5011.5097.0016.00--------
800800104.0015.00104.0016.3099.5011.50105.0018.00--------
850850109.0014.80----105.5013.50110.0018.00--------
900900114.0014.80----111.5013.50115.0018.00--------
950950120.3015.80----116.5013.50120.0018.00--------
1001000123.3015.80----119.5013.50125.0018.00--------
Type 21Type 31
DØ (Imperial)DØ (Metric)Size CodeD1L1D1L1
inmminmminmminmm
0.3751000950.96924.600.3448.740.81220.620.3127.93
1201201.09427.790.3448.74--------
0.50001271.09427.790.3448.74125.10.3127.93
0.6251601581.21930.950.40610.321.2531.750.40510.28
18*01801.34434.150.40610.32--------
0.7501901911.34434.150.40610.321.37534.930.40510.28
20*02001.40635.700.40610.32--------
0.8752202221.46937.300.40610.321.538.10.40610.32
1.0002502541.59440.500.40610.321.62541.280.43711.10
2802801.87547.630.47211.99--------
1.12502861.87547.630.47211.991.7544.440.43711.10
30*03002.00050.800.47211.99--------
1.2503203172.00050.800.47211.991.87547.630.43711.10
33*03302.12553.980.47211.99--------
1.3753503492.12553.980.47211.99250.80.43711.1
1.5003803812.25057.150.47211.992.12553.980.43711.1
40*04002.37560.330.47211.99--------
1.62504122.37560.330.47211.992.37560.330.512.7
43*04302.50063.500.47211.99--------
1.7504504442.50063.500.47211.992.563.50.512.7
1.8754804762.62566.680.47211.992.62566.680.512.7
5005002.75069.850.53113.50--------
2.00005082.75069.850.53113.502.7569.850.512.7
5305302.87573.030.53113.50--------
2.12505392.87573.030.53113.50376.20.56214.28
55*05503.00076.200.53113.50--------
2.25005713.00076.200.53113.503.12579.380.56214.28
2.3756006033.12579.380.53113.503.2582.550.56214.28
2.50006353.25082.550.53113.503.37585.730.56214.28
65*06503.62592.080.62515.88--------
2.62506663.62592.080.62515.883.37585.730.62515.88
2.7507006983.75095.250.62515.883.588.90.62515.88
2.87507303.87598.430.62515.883.7595.250.62515.88
75*07504.000101.600.62515.88--------
3.00007624.000101.600.62515.883.87598.430.62515.88
3.125*80*07944.375111.130.78319.884101.60.78319.88
3.250*08254.500114.300.78319.884.125104.780.78319.88
3.375*85*08574.625117.480.78319.884.25107.950.78319.88
3.500*90*08894.750120.650.78319.884.375111.130.78319.88
3.625*09214.875123.830.78319.884.5114.30.78319.88
3.750*95*09535.000127.000.78319.884.625117.480.78319.88
3.875*09845.125130.170.78319.88--------
100*10004.875123.830.78319.88--------
4.000*10165.250133.350.78319.884.875123.830.78319.88
DØ (Imperial)Size CodeD2D3L1L2Slot P.C.D.O'-ring Size
inmminmminmminmminmm
0.500*01270.54313.800.99625.300.3117.900.0982.500.78019.80BS214
0.625*01580.66916.981.24631.650.40610.300.0982.500.95324.20BS218
0.750*01910.79320.151.37134.820.40610.300.0982.501.09327.75BS220
0.875*02220.91923.331.49638.000.40610.300.0982.501.22031.00BS222
1.00002541.04326.501.62141.180.43911.150.0982.501.34334.10BS223
1.12502861.18430.081.74644.350.43911.150.0982.501.46937.30BS224
1.25003171.30933.251.87147.530.43911.150.0982.501.59440.50BS225
1.37503491.43436.431.99650.700.43911.150.0982.501.71743.60BS226
1.50003811.55939.602.12153.880.43911.150.0982.501.84346.80BS227
1.62504121.68442.782.37160.230.50212.750.1183.002.03151.60BS229
1.75004441.80945.952.49663.400.50212.750.1183.002.15754.80BS230
1.87504761.93449.132.62166.580.50212.750.1183.002.28057.90BS231
2.00005082.05952.302.74669.750.50212.750.1183.002.40661.10BS232
2.12505392.18455.482.99676.100.56414.330.1383.502.59465.90BS234
2.25005712.30958.653.12179.280.56414.330.1383.502.71769.00BS235
2.37506032.43461.833.24682.450.56414.330.1383.502.84372.20BS236
2.50006352.55965.003.37185.630.56414.330.1383.502.96975.40BS237
2.62506662.68468.183.37185.630.62715.930.1383.503.03177.00BS237
2.75006982.80971.353.49688.800.62715.930.1383.503.15780.20BS238
2.87507302.93474.533.74695.150.62715.930.1383.503.34384.90BS240
3.00007623.05977.703.87198.330.62715.930.1383.503.46988.10BS241
3.125*07943.22581.923.996101.500.78119.840.1383.503.59491.30BS242
3.250*08253.35085.104.121104.680.78119.840.1383.503.71794.40BS243
3.375*08573.47588.274.246107.850.78119.840.1383.503.84397.60BS244
3.500*08893.60091.444.371111.030.78119.840.1383.503.969100.80BS245
3.625*09213.72594.624.496114.200.78119.840.1383.504.094104.00BS246
3.750*09533.85097.794.621117.380.78119.840.1383.504.217107.10BS247
3.875*09843.975100.974.746120.550.78119.840.1383.504.343110.30BS248
4.000*10164.100104.144.871123.730.78119.840.1383.504.469113.50BS249
DØ (Imperial)Size CodeD1D2L1L2PIN PCDPIN Ø
inmminmminmminmminmminmm
0.500*01271.00025.400.54313.800.3137.950.1122.850.68717.460.07902.00
0.62501581.25031.750.66916.980.40510.280.1574.000.81320.640.07902.00
0.750*01911.37534.930.79220.120.40510.280.1574.000.93723.810.07902.00
0.87502221.50038.100.91923.330.40510.280.1574.001.06326.990.07902.00
1.00002541.62541.281.04326.500.43711.100.1614.101.18730.150.07902.00
1.12502861.75044.441.18430.080.43711.100.1614.101.31333.350.07902.00
1.25003171.87547.631.30933.250.43711.100.1614.101.43736.500.07902.00
1.37503492.00050.801.43536.450.43711.100.1614.101.56339.700.07902.00
1.50003812.12553.981.55939.600.43711.100.1614.101.68742.850.07902.00
1.62504122.37560.331.68442.780.50012.700.1654.201.87547.630.11803.00
1.75004442.50063.501.80945.950.50012.700.1654.202.00050.800.11803.00
1.87504762.62566.681.93449.130.50012.700.1654.202.12553.980.11803.00
2.00005082.75069.852.05952.300.50012.700.1654.202.25057.150.11803.00
2.12505393.00076.202.18455.480.56214.280.1774.502.37560.330.11803.00
2.25005713.12579.382.30958.650.56214.280.1774.502.50063.500.11803.00
2.37506033.25082.552.43861.930.56214.280.1774.502.62566.680.11803.00
2.50006353.37585.732.55965.000.56214.280.1774.502.75069.850.11803.00
2.62506663.37585.732.68468.180.62515.880.1734.402.87573.030.11803.00
2.750*06983.50088.902.80971.350.62515.880.1734.403.00076.200.11803.00
2.87507303.75095.252.93474.530.62515.880.1734.403.12579.380.11803.00
3.00007623.87598.433.05977.700.62515.880.1734.403.25082.550.11803.00
3.12507944.000101.603.22581.920.78319.880.1774.503.37685.750.11803.00
3.25008254.125104.783.35085.090.78319.880.1774.503.50088.900.11803.00
3.37508574.250107.953.47588.270.78319.880.1774.503.62492.050.11803.00
3.50008894.375111.133.60091.440.78319.880.1774.503.75095.250.11803.00
3.62509214.500114.303.72594.620.78319.880.1774.503.87498.400.11803.00
3.75009534.625117.483.85097.790.78319.880.1774.504.000101.600.11803.00
3.87509844.750120.653.975100.970.78319.880.1774.504.125104.780.11803.00
4.00010164.875123.834.100104.140.78319.880.1774.504.250107.950.11803.00
DØ (Imperial)DØ (Metric)Size CodeType 11Type 20Type 19BType 24
D1L1D1L1D1L1D1L1
inmminmminmminmm
0.37500950.87522.230.3127.930.96924.60.3448.74--------
1001000.87522.230.3127.930.96924.60.3448.7421.006.6021.008.60
1201201.00025.400.3127.931.09427.790.3448.7423.006.6023.008.60
0.50001271.00025.400.3127.931.09427.790.3448.74--------
1301301.00025.400.3127.931.09427.790.3448.74--------
1401401.25031.750.40510.281.21930.950.40610.3225.006.6025.008.60
150150--------1.21930.950.40610.3227.006.6027.008.60
0.62501581.25031.750.40510.281.21930.950.40610.32--------
1601601.25031.750.40510.281.21930.950.40610.3227.006.6027.008.60
1801801.37534.930.40510.281.34434.150.40610.3233.007.5033.0010.00
0.75001911.37534.930.40510.281.34434.150.40610.32--------
2002001.50038.100.40510.281.40635.70.40610.3235.007.5035.0010.00
2202201.50038.100.40510.281.46937.30.40610.3237.007.5037.0010.00
0.87502221.50038.100.40510.281.46937.30.40610.32--------
2402401.62541.280.43711.101.59440.50.40610.3239.007.5039.0010.00
2502501.62541.280.43711.101.59440.50.40610.3240.007.5040.0010.00
102541.62541.280.43711.101.59440.50.40610.32--------
2802801.75044.440.43711.101.87547.630.47211.9943.007.5043.0010.00
1.12502861.75044.440.43711.101.87547.630.47211.99--------
3003001.87547.630.43711.10250.80.47211.9945.007.5045.0010.00
1.25003171.87547.630.43711.10250.80.47211.99--------
3203201.87547.630.43711.10250.80.47211.9948.007.5048.0010.00
3303302.00050.800.43711.102.12553.980.47211.9948.007.5048.0010.00
1.3753503502.00050.800.43711.102.12553.980.47211.9950.007.5050.0010.00
1.5003803802.12553.980.43711.102.2557.150.47211.9956.009.0056.0011.00
4004002.37560.330.50012.702.37560.330.47211.9958.009.0058.0011.00
1.62504122.37560.330.50012.702.37560.330.47211.99--------
4304302.50063.500.50012.702.563.50.47211.9961.009.0061.0011.00
1.75004442.50063.500.50012.702.563.50.47211.99--------
4504502.62566.680.50012.702.563.50.47211.9963.009.0063.0011.00
1.87504762.62566.680.50012.702.62566.680.47211.99--------
4804802.75069.850.50012.702.62566.680.47211.9966.009.0066.0011.00
5005002.75069.850.50012.702.7569.850.53113.570.009.5070.0013.00
205082.75069.850.50012.702.7569.850.53113.5--------
5305303.00076.200.56214.282.87573.030.53113.573.0011.0073.0013.00
2.12505393.00076.200.56214.282.87573.030.53113.5--------
5505503.12579.380.56214.28376.20.53113.575.0011.0075.0013.00
2.25005713.12579.380.56214.28376.20.53113.5--------
5805803.25082.550.56214.283.12579.380.53113.578.0011.0078.0013.00
6006003.25082.550.56214.283.12579.380.53113.580.0011.0080.0013.00
2.37506033.25082.550.56214.283.12579.380.53113.5--------
6306303.37585.730.56214.283.2582.550.53113.5----83.0013.00
2.506353.37585.730.56214.283.2582.550.53113.5--------
6506503.37585.730.62515.883.62592.080.62515.8885.0011.0085.0013.00
2.6256663.37585.730.62515.883.62592.080.62515.88--------
2.7506983.50088.900.62515.883.7595.250.62515.88--------
707003.50088.900.62515.883.7595.250.62515.8892.0011.3092.0015.30
2.8757303.75095.250.62515.883.87598.430.62515.88--------
757503.87598.430.62515.884101.60.62515.8897.0011.3097.0015.30
3.0007623.87598.430.62515.884101.60.62515.88--------
3.1257944.000101.600.78319.884.375111.130.78319.88--------
80800--------4.5114.30.78319.88105.0012.00105.0015.70
3.2508254.125104.780.78319.884.5114.30.78319.88--------
85850--------4.625117.480.78319.88110.0014.00110.0015.70
3.3758574.250107.950.78319.884.625117.480.78319.88--------
3.5008894.375111.130.78319.884.75120.650.78319.88--------
90900--------4.875123.830.78319.88115.0014.00115.0015.70
3.6259214.500114.300.78319.884.875123.830.78319.88--------
95950--------51270.78319.88120.0014.00120.0015.70
3.7509534.625117.480.78319.8851270.78319.88--------
3.8759844.750120.650.78319.885.125130.170.78319.88--------
1001000--------5.25133.350.78319.88125.0014.00125.0015.70
4.00010164.875123.830.78319.885.25133.350.78319.88--------
DØ (Metric)Size CodeD1D4DINS / DINL L1DINL Slot WidthDINL Slot Depth
10010021.0016.428.604.005.00
12012023.0018.428.604.005.00
14014025.0020.428.604.005.00
16016027.0022.428.604.005.00
18018033.0026.610.004.005.50
20020035.0028.610.004.005.50
22022037.0030.610.004.005.50
24024039.0032.610.004.005.50
25025040.0033.610.004.005.50
28028043.0036.610.004.005.50
30030045.0038.610.004.005.50
32032048.0041.610.004.005.50
33033048.0041.610.004.005.50
35035050.0043.810.004.005.50
38038056.0048.811.005.005.50
40040058.0050.811.005.005.50
43043061.0053.811.005.005.50
45045063.0055.811.005.005.50
48048066.0058.811.005.005.50
50050070.0061.2513.005.005.50
53053073.0064.2513.005.005.50
55055075.0066.2513.005.005.50
58058078.0069.2513.005.005.50
60060080.0071.2513.005.005.50
63063083.0074.2513.005.005.50
65065085.0076.2513.005.005.50
68068090.0080.515.305.005.50
70070092.0082.615.305.005.50
75075097.0087.615.305.005.50
800800105.0094.715.705.005.50
850850110.0099.715.705.005.50
900900115.00104.715.705.005.50
950950120.00109.715.705.005.50
1001000125.00114.715.705.005.50
DØ (Imperial)DØ (Metric)Size CodeD1D2D3L1L2
inmminmminmminmminmm
0.5001201271.14429.050.53913.701.56339.700.68517.400.3117.90
1501501.25631.900.63016.001.61441.000.68517.400.3117.90
0.6251601581.30133.040.66116.801.72043.690.68517.400.3117.90
0.7501901911.42636.210.78720.001.83146.500.68517.400.3117.90
2002001.45336.900.82721.001.85047.000.68517.400.3117.90
0.8752202221.55139.390.91323.201.94949.500.68517.400.3117.90
2502501.65041.901.02426.002.04752.000.68517.400.3117.90
1.00002541.67642.561.03926.402.06752.500.68517.400.3117.90
1.1252802861.80145.741.16529.602.30358.501.05926.900.43711.10
3003001.91748.691.22031.002.31358.751.05926.900.43711.10
1.25003171.98850.501.28732.702.50063.501.05926.900.43711.10
33*03302.05952.301.33934.002.55965.001.05926.900.43711.10
1.3753503492.11353.681.41736.002.57965.501.05926.900.43711.10
1.5003803812.23856.851.53939.102.73669.501.05926.900.43711.10
4004002.43761.901.61441.002.95375.001.05926.900.43711.10
1.62504122.48863.201.66142.203.01276.501.05926.900.43711.10
1.75004442.63066.381.78745.403.13079.501.05926.900.43711.10
4504502.63466.901.81146.003.15080.001.05926.900.43711.10
1.8754804762.73869.551.92949.003.24882.501.05926.900.43711.10
5005002.83171.902.00851.003.34685.001.05926.900.43711.10
2.00005082.86372.732.03951.803.36685.501.05926.900.43711.10
2.12505393.11379.082.16154.903.76095.501.31233.330.56314.30
55*05503.14679.902.20556.003.78096.001.31233.330.56314.30
2.25005713.23882.252.28758.103.87898.501.31233.330.56314.30
6006003.34384.902.40261.003.976101.001.31233.330.56314.30
2.37506033363.00085.432.41361.303.996101.501.31233.330.56314.30
2.50006353.48888.602.53964.504.114104.501.31233.330.56314.30
65*06503.53989.902.59866.004.173106.001.31233.330.56314.30
2.62506663.61391.782.66167.604.272108.501.31233.330.56314.30
2.7507006983.73694.902.79571.004.370111.001.31233.330.56314.30
2.87507303.86398.132.91374.004.508114.501.31233.330.56314.30
75*07503.93399.902.99276.004.567116.001.31233.330.56314.30
3.00007623.92699.713.03977.205.547115.501.31233.330.56314.30
3.125*07944.051102.893.16580.404.705119.501.31233.330.56314.30
80*08004.130104.903.18981.004.764121.001.31233.330.56314.30
3.250*08254.232107.503.29583.704.862123.501.35034.300.56314.30
85*08504.327109.903.38686.004.961126.001.35034.300.56314.30
3.375*08574.364110.853.42186.905.020127.501.35034.300.56314.30
3.500*08894.488114.003.53989.905.138130.501.35034.300.56314.30
90*09004.508114.503.58391.005.138130.501.35034.300.56314.30
3.625*09214.610117.103.67393.305.256133.501.35034.300.56314.30
95*09504.720119.903.78096.005.354136.001.35034.300.56314.30
3.750*09534.738120.353.79196.305.374136.501.35034.300.56314.30
100*10004.917124.903.976101.005.551141.001.35034.300.56314.30
4.000*10164.988126.704.039102.605.610142.501.35034.300.56314.30
4.250*10795.238133.054.291109.005.886149.501.35034.300.56314.30
4.500*11435.488139.404.539115.306.122155.501.35034.300.56314.30
5.000*12706.488164.805.039128.007.382187.501.41736.000.63016.00
5.500*13976.988177.505.539140.707.894200.501.41736.000.63016.00

Equivalent Products

Suitable Applications

Pump Ranges

The Grundfos® pump model includes the following pump ranges: "CR", "CRI" and "CRIE" with "HQQ" type seals fitted.
Phone : +44 (0) 114 249 3333
Email : contact@vulcanseals.com
Vulcan Seals Type 678 Grundfos®

Technical Data Sheet

Product Description

The Vulcan Seals Type 678 is supplied with an Allen key and plastic setting shoe to aid in setting the seals at the correct working height during installation. Vulcan Seals Type 678 screw (12 and 16mm) or push-fit (22mm) semi-cartridge seals to replace Grundfos® “H” code seals; installed in CR, CRI, CRIE, and certain other series of vertical multi-stage pumps.

The Vulcan Seals Type 678 is a robust bidirectional seal design with a positive drive to the rotary head, and features seal face materials intended to maximise performance in poor lubrication situations frequently associated with hot water vertical circulating pumps.

Operating Limits

Why Choose the Vulcan Seals Type 678 Grundfos®?

The Vulcan Seals Type 678 features the wave-spring and energised ‘O’-ring technology of the Vulcan Seals Type 1677M and has superior design characteristics compared to the welded, single-spring original seals.

Suitable Applications

Gland Packing Replacement Range

Phone : +44 (0) 114 249 3333
Email : contact@vulcanseals.com
Vulcan Seals Type 678 Grundfos®

Technical Data Sheet

Product Description

The Vulcan Seals Type 678 is supplied with an Allen key and plastic setting shoe to aid in setting the seals at the correct working height during installation. Vulcan Seals Type 678 screw (12 and 16mm) or push-fit (22mm) semi-cartridge seals to replace Grundfos® “H” code seals; installed in CR, CRI, CRIE, and certain other series of vertical multi-stage pumps.

The Vulcan Seals Type 678 is a robust bidirectional seal design with a positive drive to the rotary head, and features seal face materials intended to maximise performance in poor lubrication situations frequently associated with hot water vertical circulating pumps.

Why Choose the Vulcan Seals Type 678 Grundfos®?

The Vulcan Seals Type 678 features the wave-spring and energised ‘O’-ring technology of the Vulcan Seals Type 1677M and has superior design characteristics compared to the welded, single-spring original seals.

Pump Ranges

The Grundfos® pump model includes the following pump ranges: "CR", "CRI" and "CRIE" with "HQQ" type seals fitted.

Standard Face Material Combinations

Dimensional Data

Text Under the Dimensional Data table

Related Products

Our products are expertly designed to meet and exceed reliability, compliance and performance expectations.

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