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.

Render showing a cross-section of a Type A (lipped) gasket.
Render showing a cross-section of a Type B (unlipped) gasket.

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.

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

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

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

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 elastomer O-rings

Material Type: EPDM

Color: Blue

Temp Range (°C): -40 to +150

FDA: A-F

USP:

3A 18-03:

Metal Detectable?: Yes

Detectaseal elastomer O-rings

Material Type: Silicone (VMQ)

Color: Black

Temp Range (°C): -60 to +200

FDA: A-F

USP: 87+88

3A 18-03:

Metal Detectable?: Yes

A HyClamp sanitary gasket with white and black elastomer seal components

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.

The ultimate perfluoroelastomers for sealing applications where chemical resistance and high temperature performance are critical.

Metal detectable and X-ray detectable elastomer compounds providing the latest in contamination detection and containment.

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