Techcon Buna O-Ring, 4.11 Inch ID x 0.14 Inch CS

Description

This Techcon Buna O-ring is a large replacement seal for dispensing equipment service where a 4.11 inch inside diameter and 0.14 inch cross section are required. The black nitrile rubber profile makes it part of the dispensing valve parts group used by maintenance teams to keep fluid-path assemblies sealed during routine rebuilds.

Where these dispensing valve parts fit

Large O-rings are usually changed during planned service rather than only after a visible leak. When a seal flattens, swells, or cracks, the valve or cartridge hardware can lose pressure, pull air into the fluid path, or leave adhesive around the housing after a cycle. This size should be matched by the equipment drawing or the removed seal, because a nearby diameter can sit in the groove but still fail under compression.

dispensing valve parts specifications

Buna-N is a practical seal material for many oil, grease, water-based, and general adhesive service environments. It is not the right default for every solvent or aggressive chemistry, so check the material being dispensed before standardizing the seal kit. Keep the groove clean, lubricate only when the equipment procedure calls for it, and avoid stretching the ring over sharp edges during installation.

Use this item when the service task calls for the larger Buna profile rather than one of the smaller TS1400 family seals. Confirm the installed groove depth and the mating cover condition during teardown, because a fresh ring cannot correct a scratched housing face or a distorted retainer.

For related seals, valve hardware, and dispensing accessories, browse dispensing valve parts and accessories. For broader dispensing equipment documentation, visit Techcon.

Need Help?

Need help confirming seal size, material choice, or matching parts for a rebuild? Call (800) 220-1966 or email [email protected].