Silicone & Acrylic Combination
Silicone and acrylic combination adhesives are the material of choice when bonding in high-temperature environments or chemically aggressive conditions exceeds the service limits of standard acrylic or rubber PSA constructions. Their silicone-acrylic hybrid chemistry extends the usable temperature range and chemical resistance of the bond line while maintaining the handling characteristics and substrate compatibility of a pressure-sensitive system — suited to electronics, automotive under-hood, and defense enclosure assemblies. H-O Products carries silicone/acrylic double-coated and transfer tape constructions, including Polysil grades, and converts them to customer specification.
2378SL
2378SL is a differential double-coated adhesive construction featuring a 3.0–3.1 mil silicone PSA on one face and a 1.9–2.1 mil acrylic PSA on the opposite face, supported by a 0.5 mil polyester (PET) film carrier. The construction uses a 2 mil polyester film liner on the silicone side and a 4.7 mil clay-coated semi-bleached paper liner on the acrylic side. Adhesion is asymmetric by design: the silicone side delivers up to 74 oz/in peel and the acrylic side delivers up to 244 oz/in peel (stainless steel, 3-day RT, 180°, 2 mil aluminum foil laminate). Service temperature spans −40°F to 302°F, and both adhesives are suitable for outdoor use.
Key Properties
- Peel Adhesion, Acrylic Side, SS, 3 Days @ 160°F, 180°, 2 MIL Polyester: 219 oz/in (ASTM D3330)
- Peel Adhesion, Acrylic Side, SS, 3 Days RT, 180°, 2 MIL Aluminum Foil: 244 oz/in (ASTM D3330)
- Peel Adhesion, Silicone Side, SS, 3 Days RT, 180°, 2 MIL Aluminum Foil: 74 oz/in (ASTM D3330)
- Tack, Acrylic Adhesive (2 MIL Aluminum Foil): 1,120 gm (ASTM D2979)
- Service Temperature: −40°F to 302°F
- Adhesive Thickness: 3.0–3.1 mils silicone / 1.9–2.1 mils acrylic / 0.5 mil PET carrier
Polysil™ 1003
Polysil™ 1003 is a 3.00 mil clear silicone transfer tape engineered for high-performance applications requiring chemical resistance, excellent bond strength, and resistance to extreme temperatures. The adhesive is protected by two clear fluorosilicone-coated polyester (PET) film liners. Service temperature spans −100°F to 500°F — the widest thermal range in the H-O catalog. The adhesive carries ISO 10993-10 (Primary Skin Irritation, Pass score 0) and ISO 10993-5 (Cytotoxicity, Pass score 0) biocompatibility credentials.
Key Properties
- Peel Adhesion: 64 oz/in (PSTC-101)
- Tack: 40 oz (ASTM D 2979)
- Shear Adhesion @ 2.2 psi: 168 hours (PSTC-107)
- Minimum Service Temperature: −100°F
- Maximum Service Temperature: 500°F
- Adhesive Thickness: 3.00 mils (PSTC-133)
Polysil™ SA 1911
Polysil™ SA 1911 is a differential double-coated adhesive tape engineered for bonding dissimilar materials, with 2.8 mils of silicone PSA on one face and 2.2 mils of acrylic PSA on the other, separated by a 0.5 mil PET carrier for a total thickness of 5.5 mils. The silicone face delivers 72 oz/in peel adhesion and is specifically formulated for strong bonding to silicone foams, rubber, and other low surface energy substrates. The acrylic face delivers 70 oz/in peel adhesion with excellent heated shear performance, spanning a service temperature range of −40°F to 300°F.
Key Properties
- Peel Adhesion, Silicone Side: 72 oz/in (PSTC-101)
- Peel Adhesion, Acrylic Side: 70 oz/in (PSTC-101)
- Shear Adhesion @ 2.2 PSI, Both Sides: >168 hours (PSTC-107)
- Maximum Service Temperature: 300°F
- Tensile Strength: 15 lb/in (PSTC-131)
- Total Thickness: 5.5 mils (PSTC-133)
