Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow SILASTIC SE 1646 U Silicone Rubber

Dow SILASTIC SE 1646 U is a high-consistency, platinum-cured silicone rubber from Dow’s SILASTIC® portfolio. It offers excellent mechanical strength, thermal stability up to 200°C, and low compression set. Ideal for extrusion, injection molding, and calendering in medical, automotive, and industrial applications requiring biocompatibility and FDA compliance.
  • dow silastic se 1646 u silicone rubber_989f050c
  • dow silastic se 1646 u silicone rubber_989f050c

Features Of Dow SILASTIC SE 1646 U Silicone Rubber

  1. High-consistency, two-part addition-cure silicone rubber with excellent processability in compression and transfer molding.

  2. Outstanding thermal stability and long-term performance across a wide temperature range (–60 °C to +200 °C).

  3. Low compression set and superior resilience for dynamic sealing and gasketing applications.

  4. Excellent electrical insulation properties and UL 94 HB flammability rating.

  5. Good adhesion to various substrates including metals and engineered plastics without primers.

Typical Applications Of Dow SILASTIC SE 1646 U Silicone Rubber

  1. Automotive under-hood seals and gaskets requiring high heat resistance.

  2. Electrical and electronic encapsulation and potting components.

  3. Industrial fluid-handling seals exposed to oils, coolants, and weathering.

  4. Medical device housings and non-implantable components meeting ISO 10993 biocompatibility guidelines.

  5. Appliance door seals and vibration-damping mounts in white goods.

Specifications Of Dow SILASTIC SE 1646 U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid system (Part A: base; Part B: catalyst)
AppearanceOpaque, off-white to light gray viscous paste
Shore A Hardness (7 days @ 23 °C)65 ± 3
Tensile Strength (ASTM D412)8.0 MPa typical
Elongation at Break (ASTM D412)350% typical
Compression Set (22 hrs @ 175 °C, ASTM D395 Method B)≤ 25%
Cure SystemRoom-temperature cure with accelerated heat cure options


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *