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 6645-00-938-2173
NSN 6145-00-879-5642
NSN 5915-01-236-1484
NSN 6130-01-355-0103
NSN 6645-01-138-2463
NSN 6145-01-007-8870
NSN 6240-01-085-7216
NSN 6610-01-065-1073
NSN 5999-01-013-7601
NSN 6105-01-645-9402
NSN 6320-01-583-6809
NSN 6645-01-632-9074