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 6620-01-606-8964
NSN 7035-01-587-9081
NSN 4140-00-010-5365
NSN 5935-01-611-4228
NSN 5835-01-116-2369
NSN 5985-01-160-7898
NSN 4140-01-469-9226
NSN 2925-00-233-5644
NSN 6130-00-267-9970
NSN 5855-00-106-1640
NSN 5945-01-027-2258
NSN 6240-00-977-5599