In modern automotive electronic systems, switch wiring harnesses play a crucial role in signal transmission and power distribution. With the improvement of vehicle intelligence, the integration of wiring harnesses is higher and the wiring is denser. At the same time, it is also exposed to more harsh environments – high temperature, moisture, dust, oil stains, and vibration, any of which can lead to unstable signals or short circuits.
Therefore, reliable sealing and protection of the switch harness ends have become an important part of improving the reliability of the entire vehicle.
Application Background
During the mass production process, a certain automobile manufacturer found that the insulation performance of the switch harness connection was prone to decrease due to moisture intrusion and mechanical stress. Traditional single component sealants have the following problems in use:
Slow solidification and limited production pace;
Insufficient adhesion to plastic parts (especially POM);
The sealing layer is prone to hardening and cracking under long-term thermal cycling.
Therefore, the customer hopes to find a sealing material that combines high flexibility, flame retardancy, and excellent adhesion.
Solution: PUR 1602 two-component sealing sealant
The PUR 1602A/B two-component polyurethane elastomer launched by ELAPLUS perfectly solves the pain point problem in automotive wire harness sealing with its unique molecular structure and environmentally friendly system.
Industrial wire harness sealing
Industrial wire harness sealing
Product Features Highlights
Medium viscosity design: controllable flowability, no glue leakage in small gaps, automatic leveling after infusion;
Excellent flexibility and weather resistance: After curing, it forms a highly elastic protective layer that can resist thermal expansion, contraction, and vibration impact;
Strong adhesion: It has good adhesion to most metal, PVC, ABS, PA and other substrates,
⚠️ Plasma surface treatment is required before using POM materials to enhance adhesion;
Superior flame retardant performance: meets UL 94 V-0 level requirements and meets automotive safety standards;
Environmentally friendly solvent-free formula: odorless, heavy metal free, production friendly materials;
Excellent waterproof and moisture-proof performance: extremely low water absorption rate, long-term stable protection of internal wires and terminals.
View details of pur 1602
Process advantage
Room temperature curing or heat curing: suitable for different production line processes;
Moderate liquidity, easy to automate sealing;
Excellent deep curing performance, suitable for sealing complex wire harness ports or multi-layer structures.
Typical application areas
Sealing of automotive switch wiring harness
Lamp control harness packaging
Charging gun, ignition controller encapsulation
Protection of communication equipment and sensor modules
Application scenarios of sealing adhesive
Application scenarios of sealing adhesive
For automotive wiring harness sealing scenarios that require high reliability, waterproofing, moisture resistance, flame retardancy, and safety,
PUR 1602 two-component polyurethane sealant has become a trusted choice in the industry due to its excellent flexibility, adhesion, and weather resistance.
✅ Tip: For structural components containing POM materials, it is recommended to perform plasma surface treatment first to ensure optimal bonding effect.
Tags: Automotive switch sealant · Automotive wiring harness sealing · Electronic potting materials · Polyurethane potting adhesive · Flame retardant sealant
