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 5975-01-474-1202
NSN 5990-00-604-3023
NSN 6135-00-010-5275
NSN 7035-01-177-2807
NSN 6240-00-416-6140
NSN 5985-01-157-3275
NSN 5910-01-461-9782
NSN 5905-00-059-5627
NSN 5985-00-368-7198
NSN 6220-01-377-2513
NSN 5925-01-318-1082
NSN 6130-01-634-0603