Value Collection ZMSCH3X11 O-ring 11mm Id Buna-n 100-pack

Product Description

The VALUE COLLECTION ZMSCH3X11 is a round cross-section O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 11 mm inside diameter, 17 mm outside diameter, and 3 mm thick. With a Shore A hardness of 70, this O-ring delivers reliable compression set performance along with strong tear and abrasion resistance. It is rated for service from -40 degrees F to 250 degrees F, making it suitable for a broad range of operating environments. Sold in a pack of 100, it is a standard stocking item for plumbers, HVAC technicians, and maintenance professionals who need consistent seal replacements on hand.

This O-ring is designed for use with petroleum-based fluids and hydraulic media, making it a common choice in plumbing, HVAC, and light industrial applications. The Buna-N compound resists degradation from oils, fuels, and many hydraulic fluids encountered in mechanical and refrigeration systems. This part is not FDA approved and should not be stored in direct sunlight or near motors and other electrical equipment that may generate ozone. Installers working on fluid systems, valve assemblies, fittings, or pump housings will find this a practical shelf stock item.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — the most widely used O-ring elastomer for petroleum service
• Operating range of -40 degrees F to 250 degrees F for broad thermal compatibility
• Shore A hardness of 70 for a firm compression set with reliable sealing force
• Excellent resistance to petroleum products, oils, and hydraulic fluids
• Round cross-section profile for standard groove fitment
• Meets SAE and MIL-Spec standards
• Sold in a 100-piece pack for efficient stocking

Compatibility

Compatible with petroleum products and hydraulic media. Designed as a standard Buna-N O-ring replacement for use in plumbing, HVAC, and mechanical fluid systems requiring an 11 mm ID, 17 mm OD, 3 mm thick round cross-section seal.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance personnel. Shut off fluid supply and depressurize the system fully before removing the old O-ring or disassembling the joint. Apply a compatible lubricant to the O-ring before seating it in the groove to prevent tearing during assembly. Do not store unused O-rings in direct sunlight or near ozone-generating equipment such as electric motors.