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Lapinus Fibres
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About Lapinus Fibres

Lapinus Fibres, with origins in 1985 (Spinrock fibre production moved to the Netherlands) and formally established as a separate business in 1991 (merger and formation of Lapinus Fibres B.V.), headquartered in Roermond, Netherlands, is an engineered inorganic fibers supplier leveraging ROCKWOOL Group expertise. The company supplies highly cleaned, dispersible mineral fibers (Rockseal® series, e.g., RS440) for reinforcement in non-asbestos organic (NAO) materials. These short, premium-quality fibers improve tensile strength, crack resistance, and rheology in industrial/automotive adhesives, sealants, gaskets, and compressed sheets. It offers excellent dispersion and performance in high-quality formulations.

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Rockseal® RS470-Roxul 1000

Rockseal® RS470-Roxul 1000 by Lapinus Fibres is highly cleaned, premium quality, mineral fibers. Used for industrial and automotive applications in non-asbestos organic (NAO) gasket materials like beater-addition paper cylinder head applications, friction papers (automatic transmissions and wet brake) and thermal and electrical insulating papers. Improves green strength and drainage properties. Offers high fiber length, very low shot level, smooth surface, heat resistance and dimensional stability. Rockseal® RS470-Roxul 1000 possesses surface treatment with a cationic surfactant.
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Rockseal® RS440-Roxul 1000

Rockseal® RS440-Roxul 1000 by Lapinus Fibres is a highly cleaned, mineral fibre. Used for industrial and automotive applications in non-asbestos organic (NAO) gasket materials like high quality compressed sheets. Offers good temperature and steam resistance, easy dispersion in rubber/solvent mixes, reactive surface which cross links with rubbers, improved mechanical strength, high creep resistance, no ignition loss, no oxidation, low porosity, improved durability, high fibre loads possibility, improved thermal stability, torque retention, sealability and load bearing capacity. Possesses surface modification with sufur. Rockseal® RS440-Roxul 1000 gives optimum processing conditions and compatibility/reactivity with sulpher cured rubbers, high tensile strength and good immersion resistance and low hot compression set values.
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Rockseal® RS480-Roxul 1000

Highly cleaned, good dispersable, mineral fibre. Used for industrial and automotive applications in non-asbestos organic (NAO) gasket materials like compressed sheets. Offers good temperature and steam resistance, easy dispersion in rubber/solvent mixes, reactive surface which cross links with rubbers, improved mechanical strength, high creep resistance, no ignition loss, no oxidation, low porosity, improved durability, high fibre loads possibility, improved thermal stability, torque retention, sealability and load bearing capacity. Provides low hot compression set values.
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Rockseal®

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Fibers

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