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What shows up in accessories
- Glazing gaskets and wedges in EPDM, silicone, and neoprene
- Setting blocks and edge blocks in various durometers
- Weatherstripping, pile, and bulb seals
- Spacer tape, shims, and edge protectors
- Sill closures, end dams, and filler pieces
Before you buy
Surplus is only a bargain if it fits and it's documented. These are the questions worth asking on this category specifically.
- Gasket profiles are system-specific — the pocket dimension and bite must match or the glass won't seat correctly
- Confirm material. Silicone sealant is not compatible with every rubber, and the wrong pairing causes staining or adhesion failure
- Check durometer on setting blocks; typical glazing setting blocks are around 80 to 90 Shore A, and a soft block will compress and drop the lite
- Measure actual footage rather than trusting the label on a partial roll
- Look for compression set in coiled gasket that's been stored tight for a long time
- Verify color, since exposed gasket is a visible finish and black is not the only option in service
Common questions
Why does gasket material compatibility matter with silicone?
Some rubbers contain plasticizers and oils that migrate into adjacent silicone, causing staining, softening, or loss of adhesion. Silicone-compatible EPDM or silicone gasket is specified for that reason. When mixing surplus components, confirm compatibility before the sealant goes on.
Can I reuse setting blocks?
Only if they haven't taken a compression set. A block that's been carrying glass has permanently deformed and will no longer hold the intended bite or drainage clearance. They're inexpensive enough that new is almost always the right call.