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 6320-00-270-8222
NSN 2925-01-218-5556
NSN 5985-00-431-4462
NSN 5895-00-179-8608
NSN 5905-00-222-4322
NSN 5965-00-510-4301
NSN 5965-00-810-2204
NSN 5960-01-552-0862
NSN 6150-01-054-3983
NSN 5905-00-752-0099
NSN 5910-01-287-0555
NSN 2925-00-221-4977