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 5975-01-474-8610
NSN 5996-01-282-4334
NSN 6110-01-347-4647
NSN 6685-00-871-1191
NSN 5950-01-470-6607
NSN 5910-01-265-8620
NSN 6220-01-280-0734
NSN 5905-00-144-8471
NSN 5915-01-539-7634
NSN 6240-01-176-4359
NSN 6150-00-024-2505
NSN 6135-01-586-9728