Product Overview

This listing covers EPDM O-rings with a listed hardness of 75 +/- 5 Shore A for outdoor and climate-control equipment replacement. Confirm inside diameter, cross-section and groove dimensions against the assembly drawing. Review the actual medium, temperature, pressure and movement before selecting the compound; hardness alone does not guarantee sealing performance or outdoor service life.

Why Choose EPDM?

Understanding the difference between EPDM and other common materials is crucial for ensuring the longevity of your equipment:

•  EPDM vs Nitrile (NBR): Review outdoor exposure and the exact fluid together. A polymer family name alone does not confirm compatibility or comparative service life.

• EPDM vs Silicone: Compare the specific compounds against temperature, movement, wear and mechanical-property requirements.

• EPDM vs FKM: Select against the actual water, steam, chemical or lubricant exposure and required qualification; confirm compound-specific service limits.

Technical Parameters and Specifications

	Material	Ethylene Propylene Diene Monomer (EPDM)
	Color	Black and others
	Hardness	75 Shore A (plus or minus 5)
	Temperature Range	Confirm continuous and peak temperature limits for the selected EPDM compound and medium
	Critical Dimension Measurement	Inside diameter x cross-section (mm); specify dimensional tolerances

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.

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FAQ

Question 1: Why is 75 Shore A hardness recommended for outdoor seals?
Answer: This listing specifies 75 +/- 5 Shore A. Confirm that hardness with the groove and compound requirements; it does not establish a universal pressure rating.

Question 2: Does EPDM crack when exposed to direct sunlight?
Answer: Provide sunlight, weather and ozone exposure requirements for the compound review. Outdoor durability must be assessed for the specific formulation and installation conditions.

Question 3: Can I use these O rings for steam pipes?
Answer: Confirm steam temperature, pressure, exposure duration and the specific compound qualification before use. The EPDM designation alone does not establish a steam-service limit.

Question 4: What is the shelf life of an EPDM O ring?
Answer: Request the storage conditions, manufacture date and shelf-life guidance for the supplied compound. Inspect packaging and seal condition before installation.

Question 5: Are these seals compatible with cleaning chemicals?
Answer: Provide the cleaner composition, concentration, temperature and exposure duration. Confirm compatibility with the selected compound before repeated cleaning.

Outdoor and Climate-Control EPDM Replacement Review

For an outdoor enclosure or climate-control assembly, provide the equipment reference, seal dimensions and groove drawing. Specify the 75 +/- 5 Shore A requirement, preferred color, fluid or gas, continuous and peak temperature, pressure and movement type. Include sunlight and weather exposure, cleaning agents, and any lubricant or refrigerant contact. Confirm the selected compound and inspection requirements before ordering.