Material Certified

The following table lists our compounds which are certified for special applications:

Gas appliances and equipment in houses respectively household appliances

Approval Certific. authority Certific.Temperature range Compound Elastomer Hardness Color
DIN EN 549 DVGW B1/H3 (0 up to +80 °C) N8614AA NBR 90 ±5 Shore A black
DIN EN 549 DVGW B2/H3 (-20 up to +80 °C) N9026AA NBR 90 ±5 Shore A black
DIN EN 549 DVGW B1/H3 (0 up to +80 °C) N7000AA NBR 70 ±5 Shore A black
DIN EN 549 DVGW E1/H3 (0 up to +150 °C) V7500AC FKM 75 ±5 Shore A brown
DIN EN 549 DVGW B2/H2 (-20 up to +80 °C) N5017AA NBR 50 ±5 Shore A black
DIN EN 549 DVGW B2/H2 (-20 up to +80 °C) N6017AA NBR 60 ±5 Shore A black
DIN EN 549 DVGW C2/H3 (-20 up to +100 °C) H7007AR HNBR 70 ±5 Shore A yellow
DIN EN 549 DVGW C1/H3 (0 up to +100 °C) H7000AA HNBR 70 ±5 Shore A black
DIN EN 549 DVGW B2/H3 (-20 up to +80 °C) N7017AA FKM 70 ±5 Shore A black


DVGW (Deutscher Verein des Gas- und Wasserfaches) has been dedicated to the technical and economic development of water and gas professionals since its was founded in 1859, and has always attached special importance to safety, hygiene and environmental protection.The scope of the DVGW includes all products related to water supply and gas supply. 

EN549: Rubber materials for seals and diaphragms for gas appliances and gas equipment.

Drinking water applications

Approval Certific. authority Certific.Temperature range Compound Elastomer Hardness Color
BS6920 WRAS up to 85°C E6053AA EPDM perox. 60 ±5 Shore A black
BS6920 WRAS up to 85°C E7053AA EPDM perox. 70 ±5 Shore A black
BS6920 WRAS up to 85°C E9053AA EPDM perox. 90 ±5 Shore A black
BS6920 WRAS up to 85°C E7083AA EPDM perox. 70 ±5 Shore A black
BS6920 WRAS up to 85°C E8083AA EPDM perox. 80 ±5 Shore A black
BS6920 WRAS up to 85°C N8018AA NBR perox. 80 ±5 Shore A black
BS6920 WRAS up to 85°C N7018AA NBR perox. 70 ±5 Shore A black
ACS CARSO E7083AA EPDM perox. 70 ±5 Shore A black
KTW DVGW E7083AA EPDM perox. 70 ±5 Shore A black
W-270 DVGW E7083AA EPDM perox. 70 ±5 Shore A black
NSF-61 NSF up to 82°C E7083AA EPDM perox. 70 ±5 Shore A black
NSF-61 NSF up to 82°C N7018AA NBR perox. 70 ±5 Shore A black
NSF-61 NSF up to 60°C N7041AA NBR sulf. 70 ±5 Shore A black
NSF-61 NSF up to 82°C E7041AA EPDM perox. 70 ±5 Shore A black
NSF-61 NSF up to 82°C E7051AA EPDM sulf. 70 ±5 Shore A black
NSF-61 NSF up to 82°C E7042AA EPDM perox. 70 ±5 Shore A black
NSF-61 NSF up to 82°C S7031AB VMQ 70 ±5 Shore A rust


The WRAS (Water Regulations Advisory Scheme) play an important role in protecting public health, safeguarding water supplies and promoting the efficient use of water within customers’ premises across the UK. The scope of material certification testing includes plumbing faucets, valve parts, rubber products, plastics, etc. All materials that come into contact with water Materials that may be used to manufacture the equipment must comply with BS6920.

ACS (Attestation De Conformite Sanitaire ) is the material safety approval required for materials and products in contact with drinking water in France. All products that come in contact with drinking water must pass ACS certification before they can be legally sold in France.

KTW (Kunststoffe und Trinkwasser), a German quality standard for rubber and plastic components in contact with drinking water.

NSF (The National Sanitation Foundation ) was established in 1944 as an independent, non-profit, non-governmental organization. NSF is an authoritative organization in the field of public health and safety, which is dedicated to standard setting, product testing and certificationS that help protect food, water and the environment.
NSF/ANSI 61: Drinking Water System Components – Health Effects


Food contact and pharmaceutical industry

Approval Test by Specification Compound Elastomer Hardness Color
FDA 21 CFR internal approval § 177.2600 NBR from Shore A 60~90 Customized
FDA 21 CFR internal approval § 177.2600 EPDM from Shore A 60~90 Customized
FDA 21 CFR internal approval § 177.2600 VMQ from Shore A 60~90 Customized
FDA 21 CFR internal approval § 177.2600 FKM from Shore A 60~90 Customized
EC 1935/2004 SGS Taiwan ResAP(2004)4 E7083AA EPDM perox. 70 ±5 Shore A black
EC 1935/2004 SGS Taiwan ResAP(2004)4 N7041AA NBR sulf. 70 ±5 Shore A black
EC 1935/2004 SGS Taiwan ResAP(2004)4 V7502AA FKM bisphenol 75 ±5 Shore A black
USP Class VI – 121 °C eurofins Chapter 88 (in vivo) V7092AP FKM bisphenol 70 ±5 Shore A white
USP Class VI – 121 °C eurofins Chapter 88 (in vivo) E7003AP EPDM perox. 70 ±5 Shore A white


The Food and Drug Administration (FDA or USFDA) is a federal agency of the United States Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, medicines, biological products, cosmetics, veterinary drugs, medical devices, and diagnostic products.
CFR 21.177.2600 means CFR - Code of Federal Regulations Title 21-FOOD AND DRUGS,PART 177 INDIRECT FOOD ADDITIVES: POLYMERS
 § 177.2600 - Rubber articles intended for repeated use.

Food Contact Materials and The European Framework Regulation (EC)/1935/2004 : Within the European Union, all food contact materials and articles intended to come into contact with food need to comply with the European Framework Regulation (EC) 1935/2004. The principles set out in Regulation (EC) No 1935/2004 require that materials do not:

1.Release their constituents into food at levels harmful to human health
2.Change food composition, taste and odour in an unacceptable way


Standard for safety-Gaskets and Seals

Approval Certific. authority Certific.Temperature range Compound Elastomer Hardness Color
UL157 UL -40~200°C V7500AA FKM bisphenol 75 ±5 Shore A black
UL157 UL -40~60°C N7060AA NBR sulf. 70 ±5 Shore A black
UL157 UL -55~80°C F7004BU02 FVMQ 70 ±5 Shore A light blue
UL157 UL -40~60°C C7100AA CR 70 ±5 Shore A black
UL157 UL -60~200°C V7015AA FKM perox. 70 ±5 Shore A black


UL (Underwriters Laboratories Inc.):founded in 1894 is an independent, non-profit professional organization that conducts tests for public safety. The basic standard that covers the test methods used to investigate elastomeric gaskets and seals is ANSI/UL 157:the Standard for Safety of Gaskets and Seals.


Oil & gas application-standards for rapid gas decompression(RGD)

Approval Certific. authority Compound Elastomer Hardness Color
NORSOK M710 Element V9117AA FKM perox. 90±5 Shore A black
NORSOK M710 Element V9123AA FKM bisphenol 90±5 Shore A black
NORSOK M710 Element V9118AA FKM perox. 90±5 Shore A black
NORSOK M710 Element V9617AA FKM perox. 95±5 Shore A black
NORSOK M710 Element V9623AA FKM bisphenol 95±5 Shore A black
NORSOK M710 Element H9100AA HNBR 90±5 Shore A black
NORSOK M710 Element H9120AA HNBR 90±5 Shore A black
NORSOK M710 Element 9021A FFKM 90±5 Shore A black
NACE TM0297 Element V9117AA FKM perox. 90±5 Shore A black
NACE TM0297 Element V9154AA Aflas 90±5 Shore A black
NACE TM0297 Element 9021A FFKM 90±5 Shore A black
Total EP PVV 142 Element H9100AA HNBR 90±5 Shore A black
Total EP PVV 142 Element V9117AA FKM perox. 90±5 Shore A black
Total EP PVV 142 Element V9123AA FKM bisphenol 90±5 Shore A black


NORSOK M-710 Rev.2 Section 7.3 Annex B: “Qualification of non-metallic sealing materials and manufacturers – resistance to rapid gas decompression (RGD)”.
NORSOK M-710 Edition 3 and ISO 23936-2  “Petroleum, petrochemical and natural gas industries: Non-metallic materials in contact with media related to oil and gas production – Part 2: Elastomers”.

NACE TM0297 “Effects of high temperature, high pressure carbon dioxide decompression on elastomeric materials”.

TOTAL EP PVV 142, Appendix 8 “Elastomer O-ring seals explosion decompression type testing procedure”.


Elastomer sealing materials for wellhead and christmas tree equipment used in oil & gas drilling and production.

Approval Certific. authority Certific.Grade Compound Elastomer Hardness Color
API 6A Element FF/HH V9117AA FKM perox. 90±5 Shore A black
API 6A Element FF/HH V9118AA FKM perox. 90±5 Shore A black
API 6A Element FF/HH V9123AA FKM bisphenol 90±5 Shore A black
API 6A Element FF/HH V9154AA Aflas 90±5 Shore A black
API 6A Element FF/HH V7617AA FKM perox. 75±5 Shore A black
API 6A Element FF/HH V7618AA FKM perox. 75±5 Shore A black