Round cord is suitable for most types of cracks, such as road cracks, wall joints and foundations, which can provide a clean surface for sealing projects. Wide application: this grout line filling line can be used in the joint sealing of outside and inner joints. Pentair 670044 PVC Light Niche Cord Seal Grommet – Premier Pool & Spa Length: 10 m/12 m/15 m., Colour: grey. Material: closed cell polyethylene foam, PE waterproof. 07021/06511/06512] Seeknit Cord Joint – Yarning Hearts High quality: this grout cord filling cord is made of polyester foam. Closed cell foam, low density, non-absorbent and flexible. Suitable for filling gaps or joints. Joint concrete filling: the use of this round cord is suitable for most types of cra This grout line is made of quality foam, which is round, closed cell, safe to use, has nice flexibility and can be bendable, does not absorb water, you can use it to fill rooms or joints. Suitable for filling gaps or joints. Waterproof grout filler for versatile use in the bathroom, kitchen, garage, basement, attic and much more. Closed Cell Polyethylene Cord Round Cord Seal 16mm X 5m Rubber Foam Weather Seal Joint Filler Profile Round EPDM Foam Black For Gap And Joint, Concrete Filler PE Foam Round Cord Easy to use: place the joint sealant into the joint and press it to fit completely into the joint, then cover and smooth with sealant.