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 5930-00-289-6709
NSN 6135-01-487-6275
NSN 6135-00-162-2437
NSN 2925-00-836-2323
NSN 6685-00-338-2796
NSN 6620-01-014-6913
NSN 6610-01-581-0909
NSN 6145-00-887-6395
NSN 5990-00-351-5479
NSN 6610-01-005-1190
NSN 5855-01-431-5581
NSN 5965-01-568-8031