EPDM
https://www.racmet.com/en-ww/epdm.aspx
Communication > Glossary > EPDM EPDM Ethylene-Propylene Diene Monomer; patented lens-shaped sealing ring placed at the bulging edges of pressfitting fittings.

Can EPDM O-Rings be used for compressed-air installations?
https://www.racmet.com/en-ww/can-epdm-o-rings-be-used-for-compressed-air-installations.aspx
Communication > The expert answers > Can EPDM O-Rings be used for compressed-air installations? Can EPDM O-Rings be used for compressed-air installations? ... Up to the oil residual class 4 (ISO 8573 standard), it is still be possible to use the EPDM black O-Ring.

What operating conditions can be reached with the EPDM O-Ring?
https://www.racmet.com/en-ww/what-operating-conditions-can-be-reached-with-the-epdm-o-ring.aspx
Communication > The expert answers > What operating conditions can be reached with the EPDM O-Ring? What operating conditions can be reached with the EPDM O-Ring?

O-ring
https://www.racmet.com/en-ww/o-ring.aspx
Different O-Rings are available according to the type of application (EPDM, STEAM, HT, FKM, NBR-HNBR,MVQ)

Cooling
https://www.racmet.com/en-ww/cooling.aspx
InoxPRES, steelPRES, and aesPRES pressiftting systems may be used in cooling, open and closed-circuits (inoxPRES and aesPRES), closed circuit (steelPRES) with operating temperatures of -20 /+120 °C and with black EPDM O-Ring.

Which O-Rings are currently available?, The expert answers
https://www.racmet.com/en-ww/which-o-rings-are-currently-available.aspx
The O-Rings currently available are: EPDM (ethylene-propylene diene polymer) O-Rings usually assembled on pressfitting joints; NBR (nitrile rubber) O-Rings; FKM (fluorocarbon rubber) O-Rings; MVQ (silicone rubber) O-Rings; For uses different from traditional uses (water, EPDM, gas NBR, solar FKM), always enquire about compatibility by contacting our [...]

Raccorderie Metalliche and potable water transportation
https://www.racmet.com/en-ww/potable-water-plants.aspx
Read More   inoxPRES e aesPRES Joints in certified quality. inoxPRES and aesPRES fittings by Raccorderie Metalliche pre-fitted with EPDM O-Rings, underwent and passed European tests and certifications on potable water quality such as DVGW W534 3 and the German KTW . ... Pressfitting assembling technique is burr- or impurity-free and the EPDM compound of [...]

Pressfitting systems for Potable Water Installations, LAB
https://www.racmet.com/en-ww/pressfitting-systems-for-potable-water-installations.aspx
Both systems are equipped with a patented lenticular O-Ring in EPDM suitable for the conveyance of drinking water that meets all the requirements of the certification entities and passed the strict hygiene tests.

Pressfitting systems for Wastewater Installations, LAB
https://www.racmet.com/en-ww/wastewater.aspx
The airtightness of the RM DRAIN joints is guaranteed by the special EPDM rubber gasket, already in in all items.

Pressfitting systems for Heating and Cooling Installations, LAB
https://www.racmet.com/en-ww/pressfitting-systems-for-heating-and-cooling-installations.aspx
Pressfitting systems inoxPRES (316L stainless steel), steelPRES (galvanized carbon steel) and aesPRES (copper) with black O-Ring in EPDM can be used in hot water heating circuits and in cooling and cryogenic circuits. inoxPRES and aesPRES systems can be used in open and closed circuits while the steelPRES system can only be used in closed circuits.