A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5990-00-026-4420
NSN 6145-01-251-2024
NSN 5975-01-140-9834
NSN 6645-01-349-6632
NSN 6320-01-392-6922
NSN 5935-00-952-2897
NSN 5950-01-515-0172
NSN 6320-01-379-1182
NSN 6320-01-377-5701
NSN 6620-01-206-2462
NSN 5975-01-572-8450
NSN 7035-01-053-4769