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 5935-00-285-1963
NSN 5950-01-469-2364
NSN 5990-00-932-3070
NSN 6620-00-905-6590
NSN 5905-01-033-3496
NSN 5905-00-452-2469
NSN 5996-01-080-7943
NSN 5925-01-059-5726
NSN 5855-01-463-7372
NSN 6145-00-734-4554
NSN 5975-00-543-1195
NSN 5965-00-706-7005