BS4825 Gaskets
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.
BS4825:1991 is the British Standard for stainless steel tubes and fittings 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.


Materials for BS4825 Gaskets
PPE’s range of BS4825-3 gaskets are molded in several elastomer grades, including FFKM, FKM, EPDM, and Silicone (FMQ). X-ray and metal-detectable elastomers are also available.
PPE’s HyClamp™ materials meet key international sanitary standards and approvals, including FDA, USP Class VI, 3A 18-03 Sanitary Standards, and EC1935/EC2023. Our materials are also free from animal-derived ingredients.
Information on each available material is provided below.
Perlast® G74S expand_more

Material Type: FFKM
Color: White
Temp Range (°C): -15 to +260
FDA: A-F
USP: 87+88
3A 18-03: Class I
Metal Detectable?: No
V70SW expand_more

Material Type: FKM
Color: White
Temp Range (°C): -10 to +200
FDA: A-F
USP: 87+88
3A 18-03: Class I
Metal Detectable?: No
E70Q expand_more

Material Type: EPDM
Color: Black
Temp Range (°C): -40 to +150
FDA: A-F
USP: 87+88
3A 18-03: Class II
Metal Detectable?: No
S71U expand_more

Material Type: Silicone (VMQ)
Color: Translucent
Temp Range (°C): -60 to +200
FDA: A-F
USP: 87+88
3A 18-03: Class I
Metal Detectable?: No
Detectaseal® XE7A expand_more

Material Type: EPDM
Color: Blue
Temp Range (°C): -40 to +150
FDA: A-F
USP: —
3A 18-03: —
Metal Detectable?: Yes
Detectaseal® XS7H expand_more

Material Type: Silicone (VMQ)
Color: Black
Temp Range (°C): -60 to +200
FDA: A-F
USP: 87+88
3A 18-03: —
Metal Detectable?: Yes

PPE offers BS4825-3 hygienic gaskets in imperial sizes from 1″ to 4″ (nominal), as well as metal detectable elastomer grades.
Material Brands
Find out more about the material brands available at PPE for these high performance hygienic gaskets.
Perlast®
expand_moreThe ultimate perfluoroelastomers for sealing applications where chemical resistance and high temperature performance are critical.

Detectaseal®
expand_moreMetal detectable and X-ray detectable elastomer compounds providing the latest in contamination detection and containment.
Resources
Take a look at some of our most popular resources for BS4825-3 gaskets.
- VIDEO: Compliance and Hygienic Sealing
- VIDEO: Traceability and Hygienic Sealing
- BROCHURE: Hygienic gaskets & seals for aseptic pipe couplings
- TECHNICAL: Perlast FFKM material benchmarking
Visit our Resources section for further information on any critical sealing topic.
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