Product Overview
80 Durometer Commercial Grade Solid Silicone — Technical Overview & FAQs
Product Overview
80 Durometer Commercial Grade Solid Silicone Rubber is an extra-firm, high-strength silicone elastomer designed for applications requiring maximum rigidity, load-bearing capability, and dimensional stability under heavy mechanical stress.
At 80 Shore A, this is one of the firmest silicone grades available, offering superior resistance to deformation under pressure while delivering all the inherent benefits of silicone—such as extreme temperature resistance, UV/ozone durability, and long-term material stability.
This material is ideal for industrial sealing, rigid mechanical interfaces, equipment housings, aerospace and automotive components, and applications requiring heavyweight compression resistance.
Applications
High-load mechanical and industrial sealing
Rigid, high-pressure gasket interfaces
Transportation, aerospace, and heavy-equipment sealing
Electronic and electrical enclosure gasketing
Equipment mounting pads and isolation components
High-strength die-cut gaskets and structural silicone parts
Key Properties
Durometer: 80 Shore A (extra-firm solid silicone)
Mechanical Strength: High tensile and tear resistance
Compression Resistance: Excellent under heavy mechanical loads
Elongation: Lower than softer grades; controlled deflection
Temperature Range: –80 °F to +450 °F (–62 °C to +232 °C)
Environmental Resistance: Exceptional UV, ozone, and weather durability
Chemical Resistance: Resists water, oils, solvents, and environmental aging
Electrical: Strong dielectric insulating properties
Formats Available: Rolls, sheets, strips, extrusions, die-cut gaskets, PSA-backed parts
Compliance: RoHS | REACH
FAQs
What is 80 Durometer Solid Silicone used for?
It is used for heavy-duty, high-pressure sealing, mechanical interface pads, rigid gaskets, and structural silicone components that require maximum firmness and mechanical stability.
How firm is 80 durometer silicone?
80A silicone is very firm—significantly stiffer than 60A or 70A grades.
It provides:
Maximum load-bearing capacity
Very low deformation
Superior mechanical durability
Ideal performance for structural sealing applications
Does 80 durometer silicone perform well outdoors?
Yes. Silicone’s excellent UV, ozone, and weather resistance makes 80A ideal for long-term outdoor and harsh-environment exposure.
Can 80 durometer silicone withstand high temperatures?
Absolutely. It remains stable from –80 °F to +450 °F, making it suitable for industrial, automotive, electrical, and high-temperature environments.
Can this grade be manufactured as die-cut or PSA-backed parts?
Yes — H-O Products can supply this material as die-cut gaskets, strips, PSA-backed components, and custom-engineered parts for OEM production.
Contact H-O Products to request 80 Durometer Commercial Grade Solid Silicone samples, custom gasket fabrication, or application-specific engineering support - contact us.
