Insulation Sleeving

National Plastics and Seals is proud to be an industry leader in electrical insulation and fiberglass sleeve distribution. We provide fiberglass sleeving to meet clients’ specific UL, CSA, and/or temperature class rating requirements.

The Features and Benefits of Fiberglass Sleeves

Fiberglass sleeves serve as an easy, affordable alternative to heat-shrink tubing. Fiberglass solutions are engineered to fit comfortably over wire and cable without requiring initial shrinking to size through the use of heat. Fiberglass sleeving offers a range of unique benefits, including its ability to be resin-saturated or heavyweight braided, meaning it will not burn, melt, or become brittle. It’s also cut-through and abrasion-resistant, but can be easily cut with scissors, making it easy to install.

There’s minimal dusting when fiberglass sleeves are cut and handled, and they easily resist gasoline and engine chemicals. Fiberglass sleeving is also resistant to extremely high temperatures; therefore, it’s commonly used as thermal protection for items such as wires, cables, and hoses that are continuously subjected to harsh environments, such as those found in engine manifolds and exhaust systems.

Extremely tough and durable, fiberglass sleeving is able to maintain its structure under extreme vibration, abrasion, mechanical stress, and temperature variations. It’s used in a variety of applications to deflect or retain heat in conditions reaching 1,200 °F.

Fiberglass sleeving is supplied as:

• Heat treated fiberglass
• Vinyl coated fiberglass
• Modified acrylic coated fiberglass
• Silicone rubber coated fiberglass
• Thin wall fiberglass
• Expandable monofilament
• Heat treated and saturated fiberglass