Our company possesses 8,600 sets/pieces of O-ring specification molds and over 5,000 specifications for non-standard sealing rings (non-standard O-rings refer to dimensions outside the scope of standard parts, such as those beyond the national, American, Japanese, European, and French standard dimension series). Standard parts were established post-World War II based on industrial development and mutual reference among countries. However, many specific working conditions require unconventional rubber rings, and non-standard sealing part dimensions are not universal. When suitable rubber sealing rings cannot be found, molds must be created! Precision rubber sealing ring molds cost thousands. We have over 5,000 sets of non-standard O-ring molds and more than 3,000 sets of standard-size molds, with high-quality, precise, and genuine raw rubber. We can help customers save on R&D time and costs. Welcome to inquire (keywords: non-standard O-ring seals, uncommon rubber ring specifications, unconventional O-rings, non-standard rubber rings, special-shaped dimensions. Our company also has over 1,600 sets of washer and flat washer molds, nearly 2,000 specifications of micro precision sealing rings, and custom rubber rings. Contact HKRUMSIN Enterprise for inquiries).

Huizhou Xiangjiang Lanxin Industrial Co., Ltd. is a wholly-owned subsidiary of Deli Precision Rubber Industry, a Hong Kong-funded enterprise located at Deli Industrial Park, Jurong Industrial Zone, Banshan Road, Kowloon. Deli Xiangjiang Lanxin leverages the trend of the Guangdong-Hong Kong-Macao Greater Bay Area as a bridgehead market. The company covers an area of 15,000 square meters and specializes in high-precision machinery, aerospace, semiconductors, lasers, fluid equipment, optoelectronic medical devices, precision instrument accessories, unmanned automated machines, semiconductor hardware and plastic parts, and high-precision microelectronic equipment accessories. It is a manufacturing and trading enterprise for new energy precision hardware, rubber, and plastic parts, precision rubber products, hardware and plastic accessories, and products with high-precision tolerances at millimeter and micron-level error mold forming. We also produce and sell communication equipment accessories, mechanical accessories, optical accessories, medical equipment accessories, and unmanned machine accessories in an integrated manner.

, mold injection molding and vulcanization production of precision accessories, plastic product parts, mechanical accessories, and the R&D, production, and sales of plastic hardware electronic products. Our sealing ring products are sold in North America and the EU, adhering to strict rubber ring specifications. We implement Japanese production management, having introduced Japanese industrial production management models in the 1990s, and practice 5S management and ISO systematic management for excellent quality. We strictly follow rubber characteristics for vulcanization production, adhere to quality standards SOP and SIP operations, and rigorously comply with the "man, machine, material, method, environment" rule-based production. We currently have 8,600 mold types and provide integrated solutions for material and accessory products. Our variety of materials is extensive, including PUR PU softness and hardness control, VITON O-rings, FKM NBR rubber rings, IIR CR neoprene NR SBR rubber, PA EPDM HNBR rubber sealing rings, FFKM FLS MVQ FSIL PVMQ rubber sealing rings, washers, POLYSULFIDE AU ECO ACM rubber and plastic, FMVQ NYLON polyurethane rubber, fluorine rubber FKM FPM FMC FLUOROCARBON, silicone SILICONE, nitrile rubber rings, styrene-butadiene high molecular rubber, sodium butadiene rubber O-rings BUNA, chlorohydrin chloroprene CHLOROPRENE rubber rings, hydrogenated butyl rubber rings, EPDM sealing rings, fluorine silicone rubber rings, FFKM FFPM FFMC FVT perfluoro rubber sealing rings, FLAS fluorocarbon rubber, PA PTFE F4 acrylic rubber, isoprene rubber sealing pads, cis-polybutadiene material polyethylene, VAMAC acrylate, and other rubber ring material types. Our specifications include over 8,000 rubber ring sizes, covering American, Japanese, European, and French standard O-rings, star-shaped rings, and national standards. We offer a complete range of rubber ring specifications, with 8,600 sealing part size series, high-precision rubber component standards, and custom rectangular rings, rubber gaskets, foot pads, sealing parts, X-shaped rings, ED rings, rubber plugs, silicone rubber miscellaneous parts, and rubber component development. We use first-line raw rubber products from Germany, the USA, and Japan. Custom products meet standard food-grade, national standard, FDA, V-0, PAHS, ROHS, REACH, DFA, and LFGB certifications.