Rubber & Elastomer Material Choices

What is Natural Rubber Molding?

Rich-Rubber produces natural rubber parts. This material offers excellent resilience, compression set, food roll molding characteristics; dense friction surfaces (though ground finishes aren’t ultra-smooth); high tear strength, low crack growth, plus resistance to ketones and alcohol, along with good low-temperature performance. Part categories made with natural rubber include:

• Rubber Bumpers
• Rubber Bushings
• Rubber Connectors
• Rubber Gaskets
• Rubber Grommets
• Rubber Pads
• Rubber Seals
• Rubber Sleeve
• Rubber Balls
• Rubber Masking
• Rubber Valve

Natural Rubber is not recommended for oil and solvent resistance, and ozone attacks it.

What are the Characteristics of Natural Rubber?

• Common Names:  Natural Rubber
• ASTM D2000 Classification:  AA
• Military (MIL-STD 417):  RN
• Chemical Definition:  Polyisoprene

What are the General Characteristics of Natural Rubber?

• Durometer Range:  20 – 100
• Tensile Range (P.S.I.):  500 – 3500M
• Elongation (Max. %):  700
• Compression Set:  Excellent
• Resilience – Rebound:  Excellent
• Abrasion Resistance:  Excellent
• Tear Resistance:  Excellent
• Solvent Resistance:  Poor
• Oil Resistance:  Poor
• Low Temperature Usage:  -20° to -60°
• High Temperature Usage:  up to 175°
• Aging Weather – Sunlight:  Poor
• Adhesion to Metals:  Excellent

Looking to use natural rubber or pure gum for your application? Please contact Rich-Rubber today!