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NFS Certified Rubber

Hwaseung ChemTech Co., Ltd. is a venture company specializing in manufacturing industrial rubber parts.

EPDM(EW270/EWK370)

  • EPDM (EW270/EWK370) has been certified by NSF, and Hwaseung ChemTech Co., Ltd. manufactures only reliable products.

Features & Applications of EWK270/EWK370



Features of EWK270
  • Approved by NSF (U.S.A): NSF/ANSI/CAN 61
  • Non-toxic
  • Highly resistant to water, ozone, abrasion, and aging
  • EPDM (ETHILREN PROPLEN DINE RUBBER)
Applications
  • Water filters, water purifiers, cold/hot water dispensers, and boilers
  • Refrigerators, water softeners, dehumidifiers, faucets, shower booths, and water hammers
  • Biotechnology

Basic Physical Properties

NO Items Units Results Test Methods Notes
1 Tensile Strength N/CM2 157 KS M 6518:2007
2 Elongation at Break % 221 KS M 6518:2007
3 Spring Hardness HS (Shore A) - 70 KSM 6518:2007

Resistance to Aging

Conditions for Aging Test (150C  70HRS) Test Methods Standards
1 Rate of Change in Tensile Strength % -5.9 KS M 6518:2007 -20MAX
2 Rate of Change in Elongation at Break % -3.7 KS M 6518:2007 -20MAX
3 Change in Hardness - 2 KS M 6518:2007 10MAX
4 Compression Set (100C / 70HRS) 17 KS M 6518:2007 25MAX