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 6620-01-157-9267
NSN 5905-01-584-3790
NSN 5945-01-139-0573
NSN 6145-01-609-2291
NSN 5965-01-426-8325
NSN 5950-01-029-4169
NSN 5999-00-762-2669
NSN 6150-01-536-9498
NSN 6105-01-481-4042
NSN 5990-00-421-0956
NSN 5999-00-443-7972
NSN 5920-01-017-0687