BS4825:1991 is the British Standard for stainless steel tubes and fitting for the food industry and other hygienic applications.
Part 3 - specification for clamp type couplings relates to the elastomer gaskets which are used to seal these couplings.
PPE manufactures Hyclamp™ gaskets to BS4825-3 in various imperial sizes from 1" to 4" (nominal), including Type I (unlipped) and Type II (lipped) variations. Use the HyClamp Look-up Tool to find sizes and PPE part numbers.
BS4825-3 hygienic gaskets are molded in several elastomer material grades, including EPDM, silicone, FKM and FFKM. This range of materials provides a solution for every application including X-ray/metal detectable elastomers. PPE's HyClamp™ materials meet various international sanitary standards and approvals including FDA, USP Class VI, 3A 18-03 Sanitary Standards and EC1935/EC2023, in addition to being free from animal derived ingredients (ADI-free). More information on each of the materials is provided below.
HyClamp Elastomer Material Range
HyClamp hygienic gaskets are available in the following elastomer materials
PPE Material Material Type Color Temp Range °C FDA USP 3A 18-03 Metal Detectable Perlast® G74S FFKM White -15 to +260 A-F 87+88 Class I No V70SW FKM White -10 to +200 A-F 87+88 Class I No Detectaseal XE7A EPDM Blue -40 to +150 A-F -- -- Yes Detectaseal XS7H Silicone (VMQ) Black -60 to +200 A-F 88 -- Yes
All the above materials are free from animal derived ingredients and are compliant with EC1935 and EC2023 regulations.
FDA, USP and 3A 18-03 certificates and material datasheets are available to download in the Engineer's Hub.
Gasket Types & Sizes
Find gasket sizes and PPE part numbers using our Look-up Tool: