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 5998-01-545-3641
NSN 5985-00-243-4160
NSN 5945-00-899-9726
NSN 5985-00-350-2173
NSN 5985-00-222-6066
NSN 6610-01-310-3313
NSN 5910-01-010-7561
NSN 5920-01-088-8312
NSN 6145-01-237-6926
NSN 5905-00-273-9789
NSN 5960-01-123-8775
NSN 6685-00-244-1029