Canon FTb Light Seals
USCamera custom light seal kit fits the Canon FT, FTb, FTb QL, and TX film cameras. The 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 backing and press into place.
Light Seal Removal, Installation help, go here.
USCamera light seal kit placement guide for this Canon camera, look here.