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 5920-01-270-0615
NSN 6145-00-177-2369
NSN 2925-01-076-5219
NSN 6110-01-339-9977
NSN 5990-00-164-1198
NSN 2925-01-077-6867
NSN 6105-01-238-0270
NSN 5925-00-973-1160
NSN 5905-00-240-9294
NSN 6110-01-294-5494
NSN 6650-01-044-4580
NSN 5935-00-375-5189