O-Ring 57x6 MVQ 70 ShA - Silicone O-Ring Seal

Technical Specifications & Applications of O-Ring 57x6 MVQ 70 ShA

The O-Ring 57x6 MVQ 70 ShA is a precision seal constructed from MVQ / VMQ silicone elastomer with 70 Shore A hardness. The dimensions are 57 mm internal diameter and 6 mm cross-section. This silicone O-ring balances flexibility and environmental robustness, ideal for demanding static sealing tasks.

Key features & benefits

• Silicone MVQ / VMQ material - excellent high/low temperature tolerance, UV and ozone resistance, environmental durability

• 70 Shore A hardness - offers improved shape retention while maintaining sufficient flexibility

• Operating temperature range - typically about −60 °C to +200 °C, depending on formulation

• Excellent weather resistance - resistant to ozone, aging and UV degradation

• Chemical compatibility - suitable for many aqueous media and mild chemicals; not ideal for strong solvents or oils incompatibles with silicone

• Low-temperature flexibility - retains elasticity in extreme cold

• Best for static sealing applications - designed primarily for non-dynamic, nonrotating sealing use

Typical applications

This O-ring is ideal for static sealing in industrial machinery, HVAC systems, laboratory equipment, food or beverage processing (if material compliance allows), heating/cooling systems, and automation setups requiring stable high-temperature seals.

Installation & operational guidance

• Design sealing grooves with proper tolerances and radii

• Use back-up rings for dynamic or pressurized arrangements to prevent extrusion

• Apply a lubricant compatible with silicone prior to assembly

• Prevent exposure to strong solvents, silicone oils (if incompatible), and aggressive gases

• Monitor periodically if used in cyclic load environments