Check the listing for details. New! Herco Closed-Cell Expanded Neoprene Rubber Sponge Cord - Round. Condition: New. Listed at 15.75 USD. Herco Closed-Cell Expanded Neoprene Rubber Sponge Cord - Round Product features Excellent resistance to weathering, abrasion, oxidation, UV and Ozone.Closed cell expanded rubber structure seals out water, oil, dust and air.Neoprene is suitable for use over a wide temperature range of -85F to +150F.Easy to fit, cut and shape for custom gasketing and sealing applications.High compressibility sponge meets Specification D-1056 2A2 and 2C2F1. Product description Closed-cell expanded Neoprene sponge rubber cord is an ideal sealing material for a wide range of applications around the home an in every industry. Precision formed with a 100% closed cell rubber which does not absorb nor allow the passage of fluids or air. Herco brand neoprene sponge rubber cord has excellent compression characteristics that make it ideal for sealing gaps or voids. Provides long-term performance in indoor or outdoor environments.