KELTAN 6950C

Keltan 6950C is a high-molecular-weight ethylene-propylene-diene monomer (EPDM) rubber designed for applications requiring excellent heat resistance, weatherability, elasticity, and long-term durability.
Keltan 6950C provides superior resistance to ozone, UV radiation, water, and many chemicals, making it ideal for automotive, construction, industrial, and sealing applications.
Keltan 6950C exhibits excellent processing behavior in extrusion and molding, offering good green strength and stable viscosity during compound preparation.
Keltan 6950C maintains mechanical performance under extreme environmental conditions and supports formulations requiring high-performance elastomeric properties.

CAS Number: 25038-36-2 (EPDM polymer)
EC Number: Not applicable
Chemical Class: Ethylene-Propylene-Diene Monomer Rubber
Molecular Formula: (C₃H₆·C₂H₄·C₅H₈)ₙ
Molecular Weight: High molecular weight (grade-specific)

Synonyms: Keltan 6950C EPDM, EPDM Rubber 6950C, EPDM Elastomer 6950C, Ethylene Propylene Diene Polymer 6950C, High-Molecular-Weight EPDM Keltan, Keltan 6950C, Keltan® 6950C, EPDM Keltan 6950C, Keltan EPDM 6950C, Keltan Rubber 6950C, EPDM Rubber Grade 6950C, EPDM Elastomer 6950C, EPDM Polymer 6950C, Ethylene Propylene Diene Rubber 6950C, Ethylene Propylene Diene Elastomer 6950C, EPDM Terpolymer 6950C, EPDM 6950C Base Polymer, High-Mooney EPDM 6950C, Medium-High Viscosity EPDM 6950C, Semi-High Mooney EPDM 6950C, Keltan Diene Rubber 6950C, Keltan Terpolymer 6950C, Keltan Elastomer 6950C, Keltan Polymer Grade 6950C, Synthetic Rubber Keltan 6950C, Specialty EPDM 6950C, Technical Grade EPDM 6950C, Industrial Grade EPDM 6950C, High-Performance EPDM 6950C, Weather-Resistant EPDM 6950C, Heat-Resistant EPDM 6950C, Ozone-Resistant EPDM 6950C, UV-Resistant EPDM 6950C, Aging-Resistant EPDM 6950C, Flexible EPDM 6950C, Durable EPDM 6950C, General Purpose EPDM 6950C, Keltan Rubber Compound 6950C, Keltan Elastomeric Polymer 6950C, EPDM Compounding Polymer 6950C, EPDM Mixing Polymer 6950C, EPDM Vulcanization Base 6950C, EPDM Curing Base Polymer 6950C, EPDM for Extrusion 6950C, EPDM for Molding 6950C, EPDM Automotive Grade 6950C, EPDM Weatherseal Grade 6950C, EPDM Hose Grade 6950C, EPDM Gasket Grade 6950C, EPDM Roofing Grade 6950C

APPLICATIONS

Keltan 6950C is used in automotive weatherstrips and sealing profiles.
Keltan 6950C provides long-lasting flexibility and ozone resistance.
Keltan 6950C maintains sealing performance over wide temperature ranges.

Keltan 6950C is applied in automotive hoses and under-hood components.
Keltan 6950C resists heat, oils, and engine compartment chemicals.
Keltan 6950C provides excellent compression set resistance.

Keltan 6950C is used in roofing membranes and construction seals.
Keltan 6950C offers superior outdoor weather durability.
Keltan 6950C withstands UV, moisture, and atmospheric pollutants.

Keltan 6950C is incorporated into cable insulation and jacketing.
Keltan 6950C provides electrical insulation and heat stability.
Keltan 6950C resists aging and environmental degradation.

Keltan 6950C is used in industrial gaskets and O-rings.
Keltan 6950C provides elasticity with long-term compression resistance.
Keltan 6950C performs well in hot-water and steam environments.

Keltan 6950C is applied in rubber flooring and shock-absorbing materials.
Keltan 6950C delivers cushioning and mechanical resilience.
Keltan 6950C maintains impact resistance at low temperatures.

Keltan 6950C is used in household and consumer product components.
Keltan 6950C provides flexibility and chemical resistance for appliance seals.
Keltan 6950C maintains long-term dimensional stability.

Keltan 6950C is used in sponge rubber and foamed elastomers.
Keltan 6950C supports uniform cell structure in foam products.
Keltan 6950C provides softness and rebound properties.

Keltan 6950C is used in automotive weatherstrips.
Keltan 6950C provides excellent elasticity for door and window seals.
Keltan 6950C enhances long-term durability against ozone exposure.

Keltan 6950C is used in automotive coolant hoses.
Keltan 6950C provides heat resistance for high-temperature hose systems.
Keltan 6950C improves flexibility in under-hood rubber components.

Keltan 6950C is used in brake system seals.
Keltan 6950C resists compression set in hydraulic sealing applications.
Keltan 6950C contributes to long-term performance in braking system elastomers.

Keltan 6950C is used in industrial rubber sheets.
Keltan 6950C provides chemical resistance against acids and alkalis.
Keltan 6950C enhances mechanical strength in industrial gaskets.

Keltan 6950C is used in roofing membranes.
Keltan 6950C provides excellent weather resistance for EPDM roofing sheets.
Keltan 6950C enhances UV resistance for long-term outdoor applications.

Keltan 6950C is used in electrical insulation.
Keltan 6950C provides dielectric stability for cable jacketing.
Keltan 6950C enhances flexibility in low-voltage insulation systems.

Keltan 6950C is used in automotive suspension bushings.
Keltan 6950C provides resilience under dynamic mechanical loads.
Keltan 6950C improves vibration damping properties.

Keltan 6950C is used in water system O-rings.
Keltan 6950C provides long-term hydrolysis resistance.
Keltan 6950C supports safe sealing performance in potable water systems.

Keltan 6950C is used in steam-resistant gaskets.
Keltan 6950C withstands elevated temperature and moisture environments.
Keltan 6950C supports sealing reliability in industrial steam lines.

Keltan 6950C is used in conveyor belt compounds.
Keltan 6950C improves flexibility and durability in belt elastomers.
Keltan 6950C enhances resistance to environmental wear.

Keltan 6950C is used in appliance seals.
Keltan 6950C ensures long-term flexibility in washing machine and dryer components.
Keltan 6950C resists thermal cycling in home appliance seals.

Keltan 6950C is used in chemical-resistant hoses.
Keltan 6950C provides resistance to polar chemicals and dilute acids.
Keltan 6950C improves service life in industrial transfer hoses.

Keltan 6950C is used in pipe coupling gaskets.
Keltan 6950C provides strong sealing performance under pressure.
Keltan 6950C resists environmental degradation in municipal piping systems.

Keltan 6950C is used in automotive windshield seals.
Keltan 6950C maintains elasticity across extreme temperatures.
Keltan 6950C enhances long-term adhesion in sealing systems.

Keltan 6950C exhibits a saturated polymer backbone, improving chemical and thermal resistance.
Keltan 6950C requires sulfur or peroxide curing systems depending on application.
Keltan 6950C provides controlled cure characteristics with predictable processing behavior.

DESCRIPTION

Keltan 6950C is a high-molecular-weight EPDM rubber grade produced through advanced polymerization technology.
Keltan 6950C provides excellent resistance to ozone, UV radiation, and environmental aging.
Keltan 6950C is widely used in sealing, gasketing, and durable elastomeric products.

Keltan 6950C appears as solid bales of black or off-white EPDM rubber.
Keltan 6950C offers a balanced combination of tensile strength and flexibility.
Keltan 6950C provides superior fatigue resistance under cyclic mechanical stress.

Keltan 6950C maintains elasticity over a broad temperature range.
Keltan 6950C exhibits low compression set suitable for long-life sealing applications.
Keltan 6950C has excellent compatibility with fillers, oils, and curing agents.

Keltan 6950C supports peroxide and sulfur vulcanization systems.
Keltan 6950C demonstrates stable rheological behavior during compounding.
Keltan 6950C can be processed by extrusion, molding, and calendering.

Keltan 6950C should be kept in cool, dry storage to maintain its structural integrity.
Keltan 6950C remains stable under standard industrial storage conditions.
Keltan 6950C is widely used in automotive, construction, electrical, and industrial rubber applications requiring high durability and weather resistance.

Keltan 6950C is a terpolymer EPDM rubber composed of ethylene, propylene, and a diene monomer (typically ENB).
Keltan 6950C contains a controlled diene content to optimize vulcanization speed and crosslink density.
Keltan 6950C displays high green strength, supporting efficient extrusion and molding.

Keltan 6950C has excellent resistance to ozone cracking and radiation.
Keltan 6950C remains flexible and elastic after prolonged outdoor exposure.
Keltan 6950C retains mechanical integrity under weathering and thermal cycling.

Keltan 6950C is compatible with fillers such as carbon black, silica, and clay.
Keltan 6950C disperses oils and plasticizers uniformly in compounding.
Keltan 6950C supports stable viscosity across typical processing temperatures.

Keltan 6950C is suitable for formulations requiring low-temperature flexibility.
Keltan 6950C maintains elasticity even at sub-zero temperatures.
Keltan 6950C offers strong tear and abrasion resistance.

PROPERTIES

Appearance: Solid EPDM rubber, typically supplied as bales
Color: Off-white to light gray
Ethylene Content: ~50–60% (grade dependent)
Diene Content (ENB): Typically 4–9%
Density: ~0.86–0.88 g/cm³
Mooney Viscosity (ML 1+4 at 125°C): Typically 50–70 MU (grade specific)
Glass Transition Temperature (Tg): ~–55°C
Hardness (Shore A, vulcanized): ~60–75 depending on formulation
Tensile Strength: ~10–18 MPa (cured)
Elongation at Break: ~300–600%
Compression Set: Excellent resistance (depends on cure system)
Thermal Stability: Up to ~150°C continuous service
Weather Resistance: Excellent; UV and ozone resistant
Chemical Resistance: Resistant to water, acids, bases, detergents, and many polar chemicals
Oil Resistance: Moderate, depending on oil type
Water Absorption: Very low
Electrical Properties: Good insulating capability

FIRST AID

Inhalation:
If heated fumes cause irritation, move to fresh air.
Seek medical attention if symptoms persist.

Skin Contact:
Wash with soap and water.
Seek medical assistance if irritation occurs.

Eye Contact:
Rinse thoroughly with clean water.
Seek medical attention if discomfort continues.

Ingestion:
Non-toxic solid; seek medical advice if swallowed.

Note to Physicians:
Treat symptomatically; material is inert in solid form.

HANDLING AND STORAGE

Handling:
Wear protective gloves when cutting or processing.
Ensure ventilation during mixing and vulcanization.
Avoid contact with hot surfaces and fumes during processing.

Avoidance:
Keep away from strong oxidizers and excessive heat.
Do not expose to open flames.

Spill Procedures:
Collect solid pieces manually.
Avoid slipping hazards from small fragments.

Storage:
Store in a cool, dry area away from direct sunlight.
Keep bales wrapped to prevent contamination.
Avoid prolonged storage at high temperatures.