CRL 3/8" x 1-1/8" x 4" Silicone Rubber Setting Blocks Deglazing Tools Do not use on plexiglass

Do not use on plexiglass

Creates Permanent Watertight Bonds

Made expressly for glazing in steel

Do not thin glazing compound

The Porcupine heavy-duty washer cover has interwoven flexible scrubber bristles that are tough on dirt

CRL 3/8" x 1-1/8" x 4" Silicone Rubber Setting Blocks Deglazing Tools Do not use on plexiglassCompatible with, and Will Not Discolor, Most Silicone Sealants Can Be Used for Food and Computer Related Applications 80 Durometer Hardness These CRL Silicone Rubber Setting Blocks have superior durability, are U. V. resistant, and are compatible with most silicone sealants. They will not discolor the silicone should the two come in contact with each other. Job specific testing prior to start up is recommended with each silicone sealant manufacturer.