North American TwinBed ® II Seals and Gaskets, OBS. Ports, Fuel Tube Parts
Sheet 4343-5
Mounting plate seal
Burner observation port
Fuel tube observation port
Burner backplate seal
Pilot mounting gasket
UV mounting gasket
Transition seal
Injector gasket
Regenerator seal
Hatch observation port
Hatch seal
Plenum seal
Air / exhaust gasket
Clean out door seal
PARTS LIST
Length in feet for each size of TwinBed II
Part name
Part no.
Description
4343-7 4343-8-A 4343-8-B 4343-9 4343-10 4343-12-A 4343-12-B
Mounting Plate Seal Burner Backplate Seal
R540-0365 R540-0365 R540-0365 R290-1320 R540-0365 R540-0365 R290-1320
½ " dia. Rope Gasket ½ " dia. Rope Gasket ½ " dia. Rope Gasket ¼ " Bolt Hole Tape ½ " dia. Rope Gasket ½ " dia. Rope Gasket ¼ " Bolt Hole Tape
5.3 5.3
5.9 5.3 5.5 6.0 5.5 5.5
6.9 6.2 6.0 6.5 6.9 6.6 12.0
7.7 7.4 7.7 7.5 7.7 7.7
9.0 8.3
9.0 8.3 12.3 9.0 8.7 8.7 19.0
10.0
9.3
Bed Hatch Seal
5.1
10.3
14.3 10.0
Clean Out Door Seal
5.8 4.9 4.9
9.0 8.7 8.7
Transition Seal Regenerator Seal
9.8 9.8
Plenum Seal
10.0
10.0
14.5
18.0
22.0
Order rope gasket and tape by the foot. Contact product manager for gasket and tape by the roll.
GASKETS
OBSERVATION PORTS
Location
TB-II size
Part number
Part name
TB-II size
Description
Part number
Pilot mounting gasket U.V. mounting gasket Air/exhaust flange gasket
all sizes all sizes
Grafoil Grafoil Grafoil Grafoil Grafoil Grafoil Grafoil
4-17477-3 4-17479-1
Burner
4343-7
NA
4343-8-A, -8-B, -9 4343-10, -12-A, -12-B
8790-0
-7
OA3-2302-2H4 OA3-2302-3H4 OA3-2302-4H4 OA3-2302-5H4 OA3-2302-6H4
8790-4-AC
-8A, -8B
Fuel Tube
all sizes
8790-0
-9
-10
Hatch
all sizes
8790-4-AC
-12A, -12B
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL.
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