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 5985-00-146-2450
NSN 6240-00-724-5421
NSN 5905-00-543-8165
NSN 6610-00-798-8562
NSN 6645-00-887-0122
NSN 6620-01-431-9176
NSN 6220-01-017-3395
NSN 6610-01-541-5034
NSN 6650-01-425-2572
NSN 5915-00-905-6860
NSN 6240-01-643-4535
NSN 6150-00-202-9150