Resilient, single spring, rubber diaphragm seal with a Type 20 boot-mounted stationary as standard, to suit original common UK housing sizes. A widely utilised seal type highly suited to general duties, capable of long service life.
Also available as Type 20H with Type 21 centrally ‘O’-Ring mounted stationary to fit same housing sizes and working lengths.
Limits are for guidance only. Product performance is dependent on materials and other operating conditions.
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