Description

Ethylene/Propylene/Diene Terpolymer (EPDM) is a versatile synthetic rubber known for its excellent resistance to weathering, ozone, and a wide range of chemicals. This high-performance elastomer is critical for applications requiring long-term durability and flexibility under harsh environmental conditions. It is an essential material for manufacturers in the automotive, construction, and industrial goods sectors seeking reliable sealing, insulating, and impact-resistant components.

Application

• Automotive Seals and Gaskets: Used in door seals, window seals, trunk seals, and hoses due to its excellent weather and ozone resistance.
• Construction and Building Profiles: Ideal for roofing membranes, window gaskets, and expansion joints because of its durability and weatherability.
• Industrial Hose and Belting: Employed in hoses for hot water, steam, and certain chemicals, and in conveyor belts requiring flexibility.
• Electrical Insulation: Serves as an insulating material for low and medium voltage cables and other electrical components.
• Plastic Modification and Impact Improvement: Used as a toughening agent to improve the impact strength of polyolefins like polypropylene (PP).
• Consumer and Sporting Goods: Found in appliance parts, garden hose washers, and various molded goods.

Basic Information

Product Name	Ethylene/Propylene/Diene Terpolymer
CAS No.	25038-36-2
Molecular Formula	(C2H4)x.(C3H6)y.(C4H6)z
Molecular Weight	Varies by grade (Typical Mn: 50,000 - 200,000)
Synonyms	EPDM Rubber; EPDM; Ethylene Propylene Diene Monomer; Ethylene-Propylene-Diene Terpolymer; EPT Rubber; Nordel (Trade Name); Royalene (Trade Name); Keltan (Trade Name)
EINECS	246-585-8

Quality Control

Our Ethylene/Propylene/Diene Terpolymer is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Key parameters such as ethylene content, diene content, Mooney viscosity, and molecular weight distribution are rigorously controlled. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from heat sources and direct sunlight. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to pale yellow pellets or bale
Ethylene Content	45 - 75 wt%
Diene Content (ENB typical)	3.0 - 12.0 wt%
Mooney Viscosity (ML 1+4 @ 125°C)	20 - 100
Specific Gravity	0.85 - 0.88
Ash Content	< 0.5 %
Volatile Matter	< 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.