Value Collection ZMSCS70FDA335 Silicone O-ring Dash 335

Product Description

The VALUE COLLECTION ZMSCS70FDA335 is a Dash 335 silicone O-ring with a round cross section, sold in a package of 5. It measures 2.725 inches inside diameter, 3.125 inches outside diameter, and 0.1875 inches thick. The silicone compound is rated at 70 Shore A hardness and carries FDA-compliant material status, making it suitable for food-processing, sanitary, and general industrial sealing applications. The operating temperature range spans -80 degrees F to 450 degrees F, which supports use in environments with wide thermal cycling, dry heat exposure, and outdoor weather or ozone conditions. Plumbers, HVAC technicians, and maintenance mechanics install this type of O-ring as a face seal, groove seal, or static seal in piping, valve, and equipment assemblies.

This O-ring is appropriate for residential and commercial applications where a wide service temperature range is required. The silicone material provides good resistance to weather and ozone, making it a practical choice for outdoor equipment, HVAC housings, and industrial machinery. It also offers limited resistance to oils, chemicals, and solvents. The FDA-compliant designation makes it acceptable in food-grade and pharmaceutical piping systems where material certification is required by inspection or code. It is not recommended as a primary seal in high-concentration petroleum oil or hydrocarbon fuel service.

Key Features

• Dash 335 standard sizing: 2.725 inches ID, 3.125 inches OD, 0.1875 inches thick
• FDA-compliant silicone material suitable for food-grade and sanitary applications
• Wide temperature range: -80 degrees F to 450 degrees F
• 70 Shore A hardness rated Hard for firm seating in standard grooves
• Good weather and ozone resistance for outdoor and HVAC enclosure use
• Round cross section for consistent groove fit and reliable static sealing

Compatibility

Designed as an OEM-style replacement or maintenance O-ring for any equipment or assembly specifying a Dash 335 silicone O-ring with a 2.725-inch inside diameter and 0.1875-inch cross section thickness. Compatible with oils, chemicals, and solvents within the material limits stated by the manufacturer.

Installation Notes

Installation is performed by plumbers, pipefitters, HVAC technicians, or maintenance mechanics depending on the application. Shut off fluid flow and depressurize the system before removing the existing O-ring. Clean the groove and mating surfaces of debris, old sealant, or damaged material before seating the new O-ring. Do not use petroleum-based lubricants with silicone O-rings in food-grade or FDA-regulated service; use a compatible silicone-safe lubricant approved for the application.