The strength of LAV.EL. Gomma lies in the numerous certifications it has been awarded for its water- and gas-application products. Download the PDF of our compounds
EN 549 – Specification for rubber materials for seals and diaphragms for gas appliances and gas equipment.
EN 681 – Material requirements for pipe joint seals used in water and drainage applications.
EN 682 – Elastomeric seals. Material requirements for seals used in pipes and fittings conveying gas and hydrocarbon fluids.
W534 – Envisages that materials meet KTW standards for sensory evaluations and EN 681-1 for physical and mechanical evaluations. It also includes a compression set test in water for 3,000 hours at 110°C, with the compression set value being taken every 1,000 hours.
ZP 5101 – Certification program compatibility and permeation properties of elastomer materials for seals and diaphragms in gas appliances and installations against hydrogen for a content of up to 100 vol. % H2