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 6110-01-648-4793
NSN 6110-01-556-4364
NSN 5950-00-246-5148
NSN 5985-01-024-8403
NSN 5985-01-106-3644
NSN 5905-00-500-9428
NSN 5925-01-237-2501
NSN 5910-00-985-5185
NSN 5999-01-451-9729
NSN 6685-00-969-3146
NSN 5965-01-368-8482
NSN 5855-01-383-6860