Custom Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows

Product Name: Custom Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows Model NO.: 3 Color: Black Capability: Acid Alkali Resistant Rubber Hose Material: Silicone Rubber Materials: Rubber, Silicone, EPDM, Nitrile, FKM, Neoprene Forming: Rubber Compression&Injection Molded Hardness: 30-90 Shore a Function: Anti-Dust & Water & Oil & Grease & Acids etc Applications: Machinery, Automobile, Medical Device etc. Working Temperature: -40c~230c Design Type: Tapered, Straight, metal Rubber Overmolding etc. Surface Finish Process: EDM, Matt Smooth OEM&ODM: Yes Typical Applications: Expansion Joint, Covers, Sealing etc. Trademark: Better Transport Package: PP Bags, Carton Boxes Specification: SGS, ROHS, FDA etc. Origin: Xiamen, China HS Code: 39241000 Product Description Customized Neoprene Nitrile EDPM Silicone Rubber BellowsRubber Bellowsare used as acover or expansion joint to protect device or machines,which are made by rubber compression molding, rubber injection mold or extrusion tool.Rubber Bellowsaredesignedas acover mainly protect againstdust, water, oil, grease, acids, bleaches, spatter or other environment elements.Reasons of Rubber Bellows' major defects:1. Flashing is too big: to solve this problem, we need to pay attention to 3 points when production; the first one is mold-design, second one is workers' skill about removing flash, and the production technology is also very important, if molding pressure is not enough, will also make the flash hard to be removed.2. Mold misalignment & uneven wall: this problem mainly caused by mold tool, like mold-making precision, misalignment of upper mold and down mold, datum angle & the 4 located pins are not accurate enough.3. Lip cracking: the situation is relative to raw materials hardness & durometer, products' structure, and die-cutting tool. Rubber Bellows Materials adoptionRUBBER COUMPOUNDS TYPES AND REFERENCES MaterialAbbreviationTemperatureRange(dry heat)AgingWeatheringOzoneOil&GreaseResistanceWaterSwell ResistanceFlex-FatigueEconomy ofMaterialMaterial Notes (Neoprene)CR-40F to 250FGoodGoodAverageVery oodGoodexposure torefrigerants,can be compounded for FDA applicationsNitrileNBR-22F to 212FPoorVery GoodGoodGoodVery GoodAutomotive Applications,Good Oil ProofEthylence-PropyleneEPDM,EPM-60F to 300FVery GoodPoorVery GoodGoodVery GoodOutside Applications,Good Weather ProofSiliconeVMQ-75F to 450FVery GoodAverageVery GoodVery GoodAverageMedical ApplicationsFluorocarbonFKM5F to 390FVery GoodVery GoodGoodAveragePoorRubber King,Widely ApplicationsRubber Bellows Design GuideRubber Bellows Some Typical ApplicationsExpansion jointsRod &Ball screw coversPiping penetration sealsFan duct connectionsCompressor and engine intake and exhaust manifold connectionsDifferent Silicone Rubber Bellows durometer demands, surface demands, parting lines demands or rubber flashing demands have different production difficulty and production cost. Epecially for mold-making technology demands, compression mold steel choice, mold maintain when mass production etc.Custom Rubber Expansion Bellows Requirements:1. Offer 2D, 3D design drawings or samples, and also tell us your sizes telorance demands.2. Bellows Materials Demands: Rubber, Silicone, EPDM, Nitrile,etc, or tell us operating environments, functions etc.3. Durometer Demands (Hardness Shore A):4.. Silicone Bellows Surface Demand5. Working Environmment Demands6.Silicon Bellows Flashing Demands etc.