FASTNER SEAL, STEEL PLATED,

APG stocks the AFS600-0101-1/4, a black Buna-N (Nitrile) Thread Seal with an inside diameter of 0.25 in (6.35 mm). A thread seal combines mechanical fastening and fluid sealing in a single component. Source specification: Nitrile 70 -1/4.505 OD.

This material stands up to greases and lubricants, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across general industrial maintenance, hydraulic and pneumatic systems, and automotive.

Order part number AFS600-0101-1/4, sold individually. Check the compound against your process media, pressure and temperature before committing to a design.