Gaskets

DOE-STD-3020-97

5.4.3.2

Metal Cases. Metal cases shall have a double-turned,

3/4 in. (19 mm) wide flange on each face or a

fluid-seal socket or sleeve as specified in the

procurement documents. Panels shall be assembled

into the frame by riveting or bolting the corners, or by

potting a subassembly consisting of the filter pack and

side panels into the top and bottom panels (but not the

corners), using an adhesive meeting the requirements

of Section 5.3.4 of this standard. For mechanically

joined panels the space between abutting panels shall

be sealed with an adhesive meeting the requirements

of Section 5.3.4 of this standard.

Gaskets. Gaskets shall be glued firmly and continuously to the case.

5.4.5

Loose, peeling, or distorted gaskets shall be cause for rejection of the

filter. The gasket shall not extend more than 1/16in. (1.6 mm) over

either side of the seating surface at any point. Gaskets may be of

one-piece or made up of strips joined at the corners by keyhole,

keystone, or other interlocking type joints. Edges of the joint area

shall be thoroughly coated with adhesive (sealant meeting

requirement of Section 5.3.4 of this standard) before assembly.

Faceguards. Faceguard edges shall be firmly embedded in adhesive

5.4.6

and shall be installed so that projecting wires or edges do not form a

puncture hazard to personnel handling the filter and do not project

onto or beyond the gasket mounting surface. Wire edges formed

when slitting or shearing expanded-metal faceguards shall be

smoothed on both surfaces of the material before installation.