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 4140-00-269-5795
NSN 6240-01-200-7937
NSN 6145-01-315-6397
NSN 6220-00-012-3620
NSN 6150-01-168-5292
NSN 6685-00-287-7564
NSN 5930-00-822-5690
NSN 5905-01-653-5618
NSN 5999-01-417-2834
NSN 5855-00-151-3853
NSN 5925-01-025-6167
NSN 5975-01-225-8050