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 5985-01-308-3688
NSN 5910-01-080-2924
NSN 5905-00-695-6179
NSN 6645-00-054-8342
NSN 5920-01-160-9260
NSN 6110-00-141-1966
NSN 5950-01-364-0006
NSN 6135-01-581-1039
NSN 6645-01-063-8243
NSN 5855-01-076-5202
NSN 6110-01-221-5887
NSN 5925-01-643-5706