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 6145-01-172-5630
NSN 6220-01-368-6879
NSN 6685-01-398-9807
NSN 5985-00-889-0320
NSN 6620-01-351-6870
NSN 6220-01-555-7812
NSN 6320-00-937-5625
NSN 6150-01-237-5796
NSN 5910-01-271-4629
NSN 5930-00-230-4980
NSN 5960-01-386-7086
NSN 6610-00-825-5774