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Specification grade elastomers

Natural rubber NR

BS 1154 Grades Z40, Z50, Z60, Z70, Z80.
DEF Standard 22-006 (NES 2006) Grades OZ40, OZ50, OZ60, OZ70, OZ80 (all in black) - Declared obsolescent.

Nitrile rubber NBR

BS 2751 Grades BA40, BA50, BA60, BA70, BA80, BA90.
BS 6996 Grades BO60, BO80.
DTD 5594A Grades 60, 70, 80, 90 - Declared obsolescent.
DTD 5509 Grades A, B, C, D - Declared obsolescent.
DEF Standard 22-005 (NES 2005) Grades BA(H)60, BA(H)70, BA(H)80 - Declared obsolescent.

Chloroprene CR (Neoprene)

BS2752 Grades C40, C50, C60, C70, C80.
ABR 4-0106 Issue 3 Grades 45, 55, 65, 75.

Butyl IIR

BS 3227 Grades B60, B70.

Ethylene propylene EPDM (terpolymer)

BS 6014 Grades EP60S, EP70S, EP80S.

Silicone VMQ, PVMQ, MQ, PMQ

DTD 5531 Grades 50, 60, 70, 80 - Declared obsolescent.
DTD 5582 (as amended) Grades 50, 60, 70, 80 - Declared obsolescent.
DTD 818 Classes L2, L3, L4, L5, N2, N3, N4, N5 - Declared obsolescent.

Fluorosilicone FMQ

This material resists mineral and synthetic oils.

DTD 5583A Grade 60 is available for defence and aerospace duties where resistance to fuels and hydraulic fluids is needed. Maximum size is 300mm x 300mm. This specification is declared obsolescent.

Fluoroelastomer FKM (dipolymer)

DTD 5543B Grades 60, 70, 80, 90 (all in black or green colour) - Declared obsolescent.
DTD 5612A Grades 50, 60, 70, 80, 90 (all in black or green colour) - Declared obsolescent.
Viton^® polymers from DuPont Performance Elastomers are supplied when specified.

Kalrez^® perfluoroelastomer FFKM

We are UK Authorised Distributor for the design, supply and technical support of sealing and fluid handling parts made from DuPont Performance Elastomers' Kalrez^®.

This high performance elastomeric material combines the resilience and sealing ability of rubber with almost universal chemical resistance and temperature capabilities up to 316°C.

Various grades of Kalrez^® are recommended for critical and/or high purity sealing applications in industry sectors as diverse as: