Value Collection ZMSCS70044 Silicone O-ring Dash 044

Product Description

The VALUE COLLECTION ZMSCS70044 is a Dash 044 silicone O-ring with a round cross section, designed for static and dynamic sealing applications across HVAC, plumbing, and industrial fluid systems. It measures 3.75 inches inside diameter, 3.875 inches outside diameter, and 0.0625 inches thick. The silicone compound delivers a working temperature range of -80 degrees F to 450 degrees F, making it a practical choice where extreme heat cycles or cold ambient conditions are present. Hardness is rated at 70 Shore A. Each package contains 10 O-rings. Licensed tradespeople and maintenance technicians handling fluid sealing, refrigerant fittings, or process piping typically source this size.

This O-ring is suited for applications requiring wide temperature tolerance and good dry heat resistance. Silicone compounds in this hardness range also offer good weather and ozone resistance. Note that oil resistance is limited, so verify fluid compatibility before installation. Typical use cases include sealing flanged joints, pipe unions, valve bodies, and access port covers in residential and light commercial mechanical systems where temperature extremes are a design factor.

Key Features

• Silicone material rated from -80 degrees F to 450 degrees F continuous service
• Dash 044 standard sizing: 3.75 inches ID, 3.875 inches OD, 0.0625 inches thick
• 70 Shore A hardness for firm, reliable compression sealing
• Round cross section for straightforward groove seating
• Compatible with oils, chemicals, and solvents where silicone is rated appropriate
• Packaged in quantities of 10 for bench stock and service van inventory

Compatibility

Designed as a standard Dash 044 O-ring replacement for sealing applications that call for a 3.75 inches ID silicone O-ring. Confirm groove dimensions and fluid compatibility before installation, as oil resistance is limited with this silicone compound.

Installation Notes

Silicone O-rings should be installed by a qualified technician familiar with mechanical sealing standards. De-energize and depressurize the system completely before removing any existing seal. Inspect the groove for burrs, nicks, or contamination before seating the new O-ring. Do not use petroleum-based lubricants with silicone seals; consult the system manufacturer for an approved assembly lubricant.