Canon FD-FL Rear Cap
Canon FTb Light Seals
USCamera custom light seal kit f0r the Canon FT, FTb, FTb QL, and TX film cameras. Th 4 piece kit includes 2 door channel seals for the camera body, 1 door hinge seal, and 1 replacement mirror cushion. All seals have adhesive already applied. To install just peel off the paper backing and press into place.
Help with removal, and replacement of foam seals is always available online
Light Seal Placement guide for this light seal kit, here.
Peeling the foam from the backing can be difficult for some. This video may help.