silicone rubber

noun

plural silicone rubbers

: a synthetic rubber that is made from silicone polymers and is characterized by water resistance, durability, flexibility over a wide temperature range, and biocompatibility

The ice tray is made from food-safe silicone rubber which makes it easier to get the ice shapes out.

—Gabriel Roberts

Pharmaceuticals, coatings, … electronics, adhesives, automobiles, and medical applications are just a few of the many industrial uses for silicone rubber. In a variety of harsh conditions, it can withstand heat, ozone, and UV radiation.

—Morteza Sarvari and Hamzeh Foratirad

The new facilities will be built over several years to produce high-consistency silicone rubber and silicone sealants, which are used in construction applications, company officials said.

—Dave Flessner

Odorless and tasteless, liquid silicone rubber … has proven to be extremely compatible with human tissue and body fluids.

—Steve Elisar

… many players elect to replace their wedding rings with silicone rubber rings during games.

—Jeff Duncan

Examples of silicone rubber in a Sentence

Recent Examples on the Web

Unfortunately, silicone rubber products strike out here, too, says Beyond Plastic’s science director Trisha Vaidyanathan. — Veronique Greenwood, Time, 26 June 2026

Between the 2 pounds of silicone rubber fastened to his head and a 30-pound bodysuit, the Irish actor was constantly overheating while playing his ambitious Gotham City gangster. — Brian Davids, HollywoodReporter, 9 June 2025

The new pen’s tip is made of small neodymium magnets mixed into Ecoflex, a brand of silicone rubber advertised for production of prosthetics and film props. — Greg Uyeno, IEEE Spectrum, 2 June 2025

Setup is so easy — just attach one of the 100-piece silicone rubber stickers to the bottom of the bin, then stick it to your desk drawer. — Nicol Natale, People.com, 26 Feb. 2025

Word History

First Known Use

1944, in the meaning defined above

Rhymes for silicone rubber

• blubber
• scrubber
• snubber