Weld Collar and Gasket options
Manhole gaskets are common replacement items. Weld collars are often sold separately from the manhole. A clamp ring is used to hold the manhole cover to the collar with a gasket seal between. Material variations are aluminum, steel, 304 stainless steel and 316 stainless steel. The manholes are offered in various sizes including elliptical 12 x 16″ and round 16″, 20″ and 24″. Collars must be fixtured during welding to tank to ensure they remain flat and round.
Product Details
| Collars | Gaskets |
|---|---|
| 12’x16″ Elliptical Collar 4055AE – Aluminum 4055MS – Steel 16″ Round Collar 3057MS – 16″ Steel 3057AE – 16″ Aluminum 3057AE021 – 16″ Aluminum (w/ holes) 3057SL – 16″ 304 Stainless 3057SS – 16″ 316 SS 20″ Round Collar 3176MS – 20″ Steel 3176MS-8.00 – 20″ Steel (8″ high) 3176AE – 20″ Aluminum 3176AE285 – 20″ Aluminum (w/ holes) 3176SL – 20″ 304 Stainless 3176SS – 20″ 316 SS 24″ Round Collar 4229MS – 24″ Steel 4229SL – 24″ 304 Stainless | 12″x16″ Elliptical Gasket 16″ Round Gaskets (“L” shaped) 3559BN – Black Buna-N (Nitrile) 3559VT – Black FKM Type-A 3559WH – White Hypalon 3559WE – White FDA EPDM (Food Grade) 20″ Round Gaskets (“L” shaped) 3560BN – Black Buna-N (Nitrile) 3560VT – Black FKM Type-A 3560WH – White Hypalon 3560WE – White FDA EPDM (Food Grade) 24″ Round Gaskets (“L” shaped) 4230BN – Black Buna-N (Nitrile) |