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 6135-01-204-8712
NSN 6130-01-613-1447
NSN 5905-00-529-6999
NSN 6110-01-377-6557
NSN 5895-01-112-6380
NSN 6645-00-492-9487
NSN 5835-01-501-0526
NSN 5895-01-629-6724
NSN 6145-01-362-0089
NSN 4140-00-226-9807
NSN 5905-01-500-9579
NSN 6150-00-539-9812