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 6645-01-329-3890
NSN 5975-00-143-4658
NSN 5945-01-397-8262
NSN 5905-01-488-6557
NSN 5910-01-253-3412
NSN 6130-01-596-7623
NSN 7035-00-205-1932
NSN 2925-01-599-1901
NSN 6145-00-548-7195
NSN 5950-01-442-9335
NSN 6110-01-439-7813
NSN 5985-00-846-8559