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Ready-to-Use Silicone Potting Compounds


No mixing required—these potting compounds come ready to apply. Use them to encase electronic assemblies for protection from dust, moisture, mechanical shock, and vibration. Softer and more flexible than epoxies and urethanes with the widest temperature range, silicone potting compounds are the best choice for high-temperature applications and electronics exposed to thermal cycling. They have good moisture resistance but poor chemical and abrasion resistance. Silicones provide excellent electrical insulation. They're also known as RTV (room-temperature vulcanizing) compounds because they don’t need heat or UV light to cure.
Container | Dry Time | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Consistency | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Clarity | Each | |
Dow Corning Compounds—Soft | ||||||||||||||
748 | 3 | Tube | Paste | 30 min. | 24 | 475 | Not Rated | -65° to 350° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Glass | Off-White | Opaque | 000000000 | 000000 |
748 | 10.1 | Cartridge | Paste | 30 min. | 24 | 475 | Not Rated | -65° to 350° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Glass | Off-White | Opaque | 000000000 | 00000 |
Epoxy Potting Compounds


Encase electronic assemblies in a layer of epoxy for protection from dust, chemicals, moisture, mechanical shock, and vibration. The strongest of the potting compounds, epoxies are rigid and wear resistant. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation. All require a mixer nozzle and gun to dispense.
3M DP460EG and DP4XLEG also require a plunger to dispense.
Dry Time | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch | Overall | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | For Use On | Color | Each | |
DP460EG | 1.69 | Thick Liquid | 110 min. | 7 days | 510 | Not Rated | 0° to 175° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Off-White | 00000000 | 000000 |
DP4XLEG | 1.69 | Thick Liquid | 5 hrs. | 7 days | 670 | Not Rated | -40° to 120° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Off-White | 00000000 | 00000 |
Dispensing Gun for 1.64 fl. oz. and 1.69 fl. oz. Cartridges | 0000000 | Each | 0000000 |
Mixer Nozzle for 1.64 fl. oz. and 1.69 fl. oz. Cartridges (Mixing Elements: 16) | 0000000 | Each | 0000 |
Plunger for 1.69 fl. oz. DP460EG Cartridges | 0000000 | Each | 00000 |
Mixer Nozzle for 1.64 fl. oz. and 1.69 fl. oz. Cartridges (Mixing Elements: 20) | 00000000 | Each | 0000 |
Heavy Duty High-Purity Coatings for Electronics

This coating is formulated for use in sensitive applications such as manufacturing semiconductors. Thinner than potting compounds, the coating flows easily into small spaces between electrical components. Use it to secure and insulate hardware on printed circuit boards. Rigid and wear resistant, has excellent chemical and moisture resistance, withstands a wide range of temperatures, and provides excellent electrical insulation. It requires a gun and a mixer nozzle (each sold separately) to dispense.
Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dry Time | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Container Size | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Temp. Range, °F | For Use On | Color | Each | |
Loctite® Coatings—Extra Hard | ||||||||||
M-21HP | 1.7 fl. oz. | Paste | 20 | 24 | 500 | -65° to 300° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Silver, Plastic, Composites, Fiberglass | Off-White | 0000000 | 000000 |
Mixer Nozzles for Two-Part Adhesive Cartridges | |||
---|---|---|---|
Mixer Nozzle for 1.7 fl. oz. Cartridges | 00000000 | Each | 00000 |
Two-Part Adhesive Dispensing Guns | |||
---|---|---|---|
Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Surface Fillers for Metal

Mix these two-part surface fillers together to repair leaks and cracks as well as to rebuild rough spots in metal. The size listed is the combined total of the two parts.
Surface fillers in a stick have a resin on the outside and a hardener on the inside. Cut the desired amount from the sticks, knead to a uniform color to mix, and press into place.
Container | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Net Weight | Type | Begins to Harden, min. | Reaches Full Strength, hrs. | Consistency | Approx. Coverage @ Thick. | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Surface Fillers | |||||||||||
16 oz. | Stick | 45 | 24 | Putty | 64 sq. in. @ 1/4" | -40° to 250° | Off-White | Machine, Drill, Sand, Tap | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium | 0000000 | 000000 |
Surface Fillers for Plastic

Use these two-part fillers to rebuild cracked or worn plastic surfaces. The size listed is the combined total of the two parts.
Surface fillers in a stick have a resin on the outside and a hardener on the inside. Cut the desired amount from the sticks, knead to a uniform color to mix, and press into place. Use with most rigid and semi-rigid types of plastic. They meet NSF/ANSI 61 for use with drinking water.
Container | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Net Weight | Type | Begins to Harden | Reaches Full Strength | Consistency | Approx. Coverage @ Thick. | Temp. Range, °F | Color | Finishing Method | For Use On | Each | |
Surface Fillers | |||||||||||
4 oz. | Stick | 20 min. | 24 hrs. | Putty | 16 sq. in. @ 1/4" | -40° to 250° | Off-White | Drill, Sand, Saw | Polystyrene Plastic, Polycarbonate Plastic, Polyurethane Rubber, ABS Plastic, PVC Plastic, CPVC Plastic, PETG Plastic, PVDF Plastic, Polyimide Plastic | 0000000 | 000000 |
Masking Tape for Plastic Sheeting

A high-tack adhesive on one side sticks to plastic sheeting, and a clean-release adhesive on the other side can be removed without surface damage for up to 21 days. Use it to mask large areas and seal out dust and dirt. Also known as containment tape.
Wd. | Lg., ft. | Overall Thick. | Material | Adhesive Location | Adhesive Type | Max. Time for Removal | Temperature Range, °F | Color | Each | |
2" | 75 | 0.0085" | Crepe Paper | Both Sides | Rubber | 21 Days | 32° to 120° | Off-White | 000000 | 000000 |
Masking Tape

Use this crepe paper tape for sharp paint lines.
Scotch 234 works well for general purpose indoor paint jobs.
Scotch 232 leaves less residue behind than standard masking tape.
Scotch 250 has a super-strong rubber adhesive and a smooth surface for even painting. Use it to create sharper paint lines than standard masking tape.
Each | Package | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Wd. | Lg., ft. | Overall Thick. | Material | Adhesive Type | Max. Time for Removal | Min. Temp., °F | Max. Temp., °F | Color | Each | Pkg. Qty. | Pkg. | ||
3M Masking Tape | |||||||||||||
Scotch 234 | |||||||||||||
1/2" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 000000 | __ | 000000 | 00 |
3/4" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | __ | 000000 | 00 |
1 1/2" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | __ | 000000 | 00 |
2" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | 24 | 00000000 | 0000000 |
3" | 15 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | __ | 000000 | 00 |
3" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | __ | 000000 | 00 |
4" | 15 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | __ | 000000 | 00 |
4" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 00000 | __ | 000000 | 00 |
Scotch 232 | |||||||||||||
1/4" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
3/8" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
1/2" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
3/4" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
1" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
1 1/2" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
2" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
3" | 15 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
3" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
3 3/4" | 180 | 0.0063" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
Scotch 250 | |||||||||||||
1" | 180 | 0.0059" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 0000000 | 000000 | __ | 000000 | 00 |
Masking Tape | |||||||||||||
1/8" | 180 | 0.0055" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 0000 | __ | 000000 | 00 |
1/2" | 180 | 0.0046" | Crepe Paper | Rubber | 3 Days | 60° | 150° | Off-White | 00000000 | 0000 | 72 | 000000000 | 00000 |
3/4" | 180 | 0.0046" | Crepe Paper | Rubber | 3 Days | 60° | 150° | Off-White | 00000000 | 0000 | 48 | 000000000 | 00000 |
1" | 180 | 0.0046" | Crepe Paper | Rubber | 3 Days | 60° | 150° | Off-White | 00000000 | 0000 | 36 | 000000000 | 00000 |
1 1/2" | 180 | 0.0046" | Crepe Paper | Rubber | 3 Days | 60° | 150° | Off-White | 00000000 | 0000 | 24 | 000000000 | 00000 |
2" | 180 | 0.005" | Crepe Paper | Rubber | 3 Days | 60° | 150° | Off-White | 00000000 | 0000 | 24 | 000000000 | 00000 |
3" | 180 | 0.0046" | Crepe Paper | Rubber | 3 Days | 60° | 150° | Off-White | 00000000 | 0000 | 16 | 000000000 | 000000 |
3 3/4" | 180 | 0.0047" | Crepe Paper | Rubber | __ | 60° | 150° | Off-White | 000000000 | 00000 | 12 | 000000000 | 000000 |
6" | 180 | 0.0055" | Crepe Paper | Rubber | __ | 50° | 90° | Off-White | 00000000 | 00000 | __ | 000000 | 00 |
Masking Tape Shapes


Use these crepe paper discs to mask areas while spray painting, as well as to temporarily cover holes for dust protection.
Dia. | Overall Thick. | Material | Adhesive Type | Temperature Range, °F | Color | Spool Material | Pkg. Qty. | Pkg. | |
Small Pack | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/8" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | __ | 100 | 00000000 | 00000 |
1/4" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | __ | 100 | 00000000 | 0000 |
3/8" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | __ | 100 | 00000000 | 0000 |
1/2" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | __ | 100 | 00000000 | 0000 |
3/4" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | __ | 100 | 00000000 | 0000 |
1" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | __ | 100 | 00000000 | 0000 |
1 1/2" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 75 | 00000000 | 00000 |
2" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 75 | 00000000 | 00000 |
3" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 50 | 00000000 | 00000 |
4" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 50 | 00000000 | 00000 |
5" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 25 | 00000000 | 0000 |
Large Pack | |||||||||
1/8" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 2,500 | 00000000 | 00000 |
1/4" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 2,500 | 00000000 | 00000 |
3/8" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 2,500 | 00000000 | 00000 |
1/2" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 2,500 | 00000000 | 00000 |
3/4" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 2,000 | 00000000 | 00000 |
1" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 1,000 | 00000000 | 00000 |
1 1/2" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 1,000 | 00000000 | 00000 |
2" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 250 | 00000000 | 00000 |
3" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 250 | 00000000 | 00000 |
4" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 125 | 00000000 | 00000 |
5" | 0.0067" | Crepe Paper | Rubber | 50° to 90° | Off-White | Cardboard | 125 | 00000000 | 00000 |
High-Temperature Masking Tape

This tape keeps its hold, even on hot surfaces.
Off-white tape withstands surface temperatures up to 325° F. It removes cleanly for up to 16 days.
Wd. | Lg., ft. | Overall Thick. | Material | Adhesive Type | Max. Time for Removal | Temperature Range, °F | Each | |
Off-White | ||||||||
---|---|---|---|---|---|---|---|---|
1/2" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 0000000 | 00000 |
3/4" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 0000000 | 0000 |
1" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 0000000 | 0000 |
1 1/2" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 0000000 | 00000 |
2" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 0000000 | 00000 |
3" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 0000000 | 00000 |
Wd. | Lg., ft. | Overall Thick. | Material | Adhesive Type | Max. Time for Removal | Temperature Range, °F | Pkg. Qty. | Pkg. | |
Off-White | |||||||||
---|---|---|---|---|---|---|---|---|---|
2" | 180 | 0.0067" | Crepe Paper | Rubber | 16 Days | 70° to 325° | 24 | 00000000 | 0000000 |
Masking Tape for Abrasive Blasting

In addition to handling temperatures up to 500° F, this fiberglass tape is tough enough for abrasive applications such as sand blasting.
Tape with adhesive on both sides can be used as an inner wrap for coils and transformers, or as an underwrap for other masking tape.
Wd. | Overall Thick. | Material | Facing Material | Adhesive Type | Temp. Range, °F | Color | Lg., ft. | Each | |
Short Roll | |||||||||
---|---|---|---|---|---|---|---|---|---|
Adhesive on One Side | |||||||||
1/2" | 0.0105" | Fiberglass Cloth | Silicone Rubber | Silicone | -100° to 500° | Off-White | 15 | 0000000 | 00000 |
1" | 0.0105" | Fiberglass Cloth | Silicone Rubber | Silicone | -100° to 500° | Off-White | 15 | 0000000 | 00000 |
2" | 0.0105" | Fiberglass Cloth | Silicone Rubber | Silicone | -100° to 500° | Off-White | 15 | 0000000 | 00000 |
Long Roll | |||||||||
Adhesive on One Side | |||||||||
1/2" | 0.0105" | Fiberglass Cloth | Silicone Rubber | Silicone | -100° to 500° | Off-White | 108 | 0000000 | 00000 |
1" | 0.0105" | Fiberglass Cloth | Silicone Rubber | Silicone | -100° to 500° | Off-White | 108 | 0000000 | 00000 |
2" | 0.0105" | Fiberglass Cloth | Silicone Rubber | Silicone | -100° to 500° | Off-White | 108 | 0000000 | 000000 |
Adhesive on Both Sides | |||||||||
1/2" | 0.0071" | Fiberglass Cloth | __ | Silicone | -100° to 500° | Off-White | 54 | 000000 | 00000 |
1" | 0.0071" | Fiberglass Cloth | __ | Silicone | -100° to 500° | Off-White | 54 | 000000 | 00000 |
2" | 0.0071" | Fiberglass Cloth | __ | Silicone | -100° to 500° | Off-White | 54 | 000000 | 000000 |