Robust, long working length, highly accommodating and reliable, rubber diaphragm balanced seal, which provides enhanced seal capability, performance and life. The Type A1 has a retainer backing plate, a narrow profile and a no spring base plate.
Improved design features further enhance this popular seal. Available with a Type 20 boot-mounted seat as standard, suitable for originally common UK housing dimensions.
Also available as Type A1H with Type 21 centrally 'O'-Ring Mounted stationary seal.
Limits are for guidance only. Product performance is dependent on materials and other operating conditions.
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