Value Collection ZMSCS70FDA338 Silicone O-ring Dash 338 5-pack

Product Description

The VALUE COLLECTION ZMSCS70FDA338 is a round-cross-section silicone O-ring sold in a pack of 5, designed for static and dynamic sealing applications that demand a wide operating temperature range and reliable chemical resistance. With a 3.125-inch inside diameter, 3.5-inch outside diameter, and 0.1875-inch thickness, this Dash 338 O-ring is manufactured from FDA-compliant silicone material rated at 70 Shore A hardness. It handles continuous service from -80 degrees F to 450 degrees F, making it well suited for high-temperature and dry-heat environments where standard elastomers fail. Licensed tradespeople and maintenance technicians working in plumbing, HVAC, food-processing equipment, and fluid-handling systems rely on this specification.

This O-ring is appropriate for sealing applications involving oils, chemicals, and solvents where broad temperature tolerance is required. The silicone compound offers good weather and ozone resistance, making it a practical choice for both indoor and outdoor installations. Its FDA-compliant material designation makes it acceptable for use in food-contact and sanitary equipment environments. The pack-of-5 format supports service kits, preventive maintenance inventories, and multi-unit repairs. Plumbers, HVAC technicians, and equipment maintenance professionals are the primary installers of this part type.

Key Features

• FDA-compliant silicone material suitable for food-contact and sanitary system applications
• Operating temperature range of -80 degrees F to 450 degrees F for wide thermal coverage
• 70 Shore A hardness rating provides firm compression and durable sealing under load
• Good resistance to weather, ozone, and dry heat; limited oil resistance noted
• Round cross section, Dash 338 standard sizing for consistent fit in standard grooves
• Sold in a pack of 5 to support service kits and preventive maintenance stock

Compatibility

Designed as an OEM-style replacement or service part for any application requiring a Dash 338 silicone O-ring with a 3.125-inch inside diameter, 3.5-inch outside diameter, and 0.1875-inch thickness in plumbing, HVAC, or industrial fluid-handling systems.

Installation Notes

O-ring installation should be performed by qualified plumbers, HVAC technicians, or maintenance mechanics following applicable system lockout and pressure-relief procedures before accessing sealed joints. Ensure the mating groove is clean, free of debris, and dimensionally correct for the Dash 338 cross section before seating the ring. Do not stretch or twist the O-ring during installation, as distortion can compromise the seal. Verify chemical compatibility with the specific media being sealed before placing the part into service.