Value Collection ZMSCH90341 O-ring Dash 341 Buna-n

Product Description

The VALUE COLLECTION ZMSCH90341 is a Dash 341 O-ring manufactured from Buna-N (Nitrile Butadiene Rubber), one of the most widely used elastomers in fluid sealing applications. It measures 3.5 inches inside diameter, 3.875 inches outside diameter, and 0.1875 inches in cross-section thickness. Rated at 90 durometer (extra hard), this O-ring delivers reliable compression set resistance along with strong tear and abrasion resistance. The temperature range spans -40 degrees F to 250 degrees F. Licensed plumbers, hydraulic technicians, HVAC mechanics, and industrial maintenance professionals use this part for static and dynamic sealing in petroleum-based fluid systems.

This O-ring is suited for residential and commercial applications where petroleum-based media are present, including hydraulic lines, fuel systems, pumps, and valve assemblies. Its Buna-N compound provides excellent resistance to petroleum products, mineral oils, and many greases. It is not recommended for exposure to ozone sources, direct sunlight during storage, or near motors and electrical equipment that generate ozone. Sold in a package quantity of 25, this O-ring is appropriate for maintenance shops and service technicians who require consistent stock of standard-sized seals.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent petroleum product resistance
• 90 durometer extra-hard rating for high compression set resistance
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross-section profile per Dash 341 standard sizing
• Meets SAE and MIL-Spec standards
• Package quantity of 25 units per order

Compatibility

Compatible with petroleum products, mineral oils, and greases. Designed for use in systems where Buna-N elastomer seals are specified. Not compatible with ozone-generating environments or prolonged UV exposure during storage.

Installation Notes

Installation should be performed by a qualified technician familiar with fluid sealing systems. De-pressurize and isolate the system completely before removing or installing any O-ring seal. Lubricate the O-ring with a compatible fluid or grease prior to installation to reduce the risk of tearing during seating. Do not twist or roll the O-ring into the groove — seat it evenly around the full circumference before pressurizing the system.