This is our most popular sealant! CRL EU33S Silicone is a high quality sealant that delivers the performance you demand at a competitive price. It is a versatile one component silicone sealant for sealing joints in sanitary rooms, kitchens and industrial areas where fungus growth is not allowed. CRL EU33S Silicone has excellent UV and weather resistance. After application the silicone cures with atmospheric moisture to form a durable rubber seal.

In general CRL EU33S Silicone may be used, also without primer, to seal assemblies of glass, glazed surfaces, porcelain coated metal, epoxy and polyester panels, polystyrene, uPVC, stainless steel, anodized aluminium and finished wood.

Basic Uses - CRL EU33S Silicone is especially designed for joining and sealing most non-porous building materials including a variety of structural materials: glass, aluminum, metal alloys, stainless steel, wood, and plastics. It has a wide operating temperature range of -80° to 400°F (-62° to 204°C), and can be applied at outdoor temperatures as low as -35° to 140°F (-37° to 60°C). 33S exhibits strong physical properties: 350 psi Tensile Strength; 120 psi Lap Shear at 1/8" (3 mm) thickness and Tear Strength of 25 ppi. It will seal curtainwall joints, steel and aluminum windows, and skylights. Indoor uses include bathtubs, showers, and sanitary installations (Mildew Resistant Clear, White, Translucent White, and Tan contain a fungicide for cured beads that are mildew resistant).

Limitations - It is not recommended for structural glazing or insulating glass glazing, concrete and stone expansion joints, horizontal decks, patios, driveway or terrace joints where abrasion is possible. Not recommended for use on concrete, marble, limestone, lead coated surfaces, submerged joints (swimming pools and aquariums), plazas, decks, pavements, etc. Not suitable for painting. Check cartridge label and Specification Data Sheet for additional limitations.

Comparable Sealants - Dow Corning®: 999-A; 786; 732; 700; Glazing Silicone; General Purpose; Commercial Grade 100%; Tub, Tile and Ceramic, HVAC/R.Dap: 100% Silicone.GE®: 1200 Construction, 1000 Contractors, 1700 Sanitary. Tremco®: Proglaze, Tremsil 200, TremPro 644. OSI: HM-270.Pecora:860, 863. Sika®: SikaSil®GP. Sonneborn: OmniPlus.

Technical Data - Meets or exceeds Federal Specifications: TT-S-001543A (COM-NBS) Class A, for silicone building sealants; TT-S-00230C (COM-NBS) Class A, for one-component building sealants; ASTM C-920 for elastomer joint sealants, Type S, Grade NS, Class 25, Use NT, G, A; CAN/CGSB 19.13-M87. CRL 33S meets the requirements of FDA Regulation Number 21 CFR 177.2600 for use in food-related applications, such as walk-in freezers and refrigerated trucks. CRL 33S is Certified by NSF to Standard 51 - Plastic Materials and Components used in Food Equipment. CRL EU33S is a "UL Recognized Component". Meets California Air Resources Board 2003 requirements for Volatile Organic Compound (VOC) content. Qualifies for LEED® (Leadership in Energy and Environmental Design) Green Building Rating System credit.