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 2925-01-440-9912
NSN 6645-01-355-7334
NSN 6220-01-627-2018
NSN 6650-01-620-8742
NSN 5950-01-076-5952
NSN 5930-01-082-1892
NSN 6610-01-048-7361
NSN 5990-01-416-6009
NSN 5905-00-155-4767
NSN 7035-01-157-0028
NSN 5910-01-633-1068
NSN 2925-01-122-8881