Product Overview

This listing covers EPDM O-rings with listed hardness options from 50 to 90 Shore A for outdoor infrastructure assemblies. Select a specific hardness and tolerance for the approved compound and groove design. Confirm seal dimensions, medium, temperature and movement conditions before ordering. Outdoor exposure requirements do not establish a universal service life or pressure rating.

Understanding EPDM Material

EPDM stands for Ethylene Propylene Diene Monomer. This listing presents 50 to 90 Shore A hardness options for review. Specify weather, ozone and sunlight exposure requirements for the selected formulation; the EPDM family name alone does not confirm every fluid or temperature application.

Material Comparison: 

Technical Parameters and Specifications

Company Profile

Welcome to Shanghai Qinuo Industry. Backed by our state-of-the-art, ISO 9001:2015 certified manufacturing base—Jiangsu Ruowei Energy Technology—we stand at the forefront of delivering high-performance rubber solutions.

Our production base in Nantong is equipped with over 30 advanced vulcanizing machines, delivering a monthly capacity of 20 tons (40,000 lbs) across 20+ product categories. Strategically located near Shanghai’s major air and sea ports, we ensure streamlined logistics and reliable global delivery.

Under our registered brands Royal Way® and SHQN®, we remain committed to our core principle: "Quality for Stability, Innovation for Progress." We provide the energy sector with durable, precision-engineered sealing solutions you can depend on.

FAQ

Question 1: Why is EPDM the best choice for outdoor infrastructure?
Answer: Include sunlight, weather and ozone exposure in the compound specification. Confirm any required aging test and acceptance criteria; this listing does not establish a fixed outdoor lifetime.

Question 2: What does the Shore A hardness rating mean for my seal?
Answer: Shore A measures hardness. Select one required value and tolerance from the listed options against the approved compound and groove specification. Hardness alone does not determine pressure suitability.

Question 3: Can I use these O rings in a car engine for oil sealing?
Answer: No. EPDM is not compatible with petroleum based oils or fuels. For oil contact applications, Nitrile or Fluoroelastomer materials are recommended.

Question 4: What is the maximum temperature these seals can handle?
Answer: Confirm the continuous and peak temperature limits for the specific compound, medium and exposure duration before use.

Specifying One Hardness for Outdoor Infrastructure Seals

The listed 50-90 Shore A range describes different hardness options, not the tolerance of one seal. For procurement, specify the required value, tolerance, compound reference, inside diameter and cross-section. Provide the groove drawing, pressure, movement, temperature and exposure conditions. Add the required weather-aging inspection or test criteria so the approved seal can be reordered consistently.