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 5950-01-543-2501
NSN 6320-00-790-4844
NSN 5998-00-194-7640
NSN 6150-01-409-2858
NSN 6620-01-266-5545
NSN 5960-01-058-8018
NSN 2925-00-759-5465
NSN 5990-00-391-6207
NSN 5925-01-386-3139
NSN 6145-01-163-9687
NSN 5950-00-652-8487
NSN 5945-00-204-9949