In a corner of the workshop,a plate heat exchanger that had just received new gaskets less than three months ago began leaking again.When the maintenance supervisor opened it up,he found the rubber gasket had hardened and cracked,completely losing its elasticity on the sealing surface.This isn’t an isolated case—many buyers allocate their budget for”pure rubber,”only to receive sheets mixed with recycled rubber and excessive calcium carbonate.At first glance,there’s no issue when installed,but after three to five months,they begin to harden,exhibit delayed rebound,lose sealing effectiveness,and degrade shock absorption.The cost of rework far exceeds the small price difference saved initially.Where exactly are rubber gaskets used?If you choose or purchase the wrong one,it will fail precisely where it shouldn’t.
Piping Flanges and Valves:The First Line of Industrial Sealing
The most fundamental and widespread application of rubber gaskets is at piping flange connections.Rubber sheets serve as excellent flange gaskets,offering strong conformity and effective sealing even under low clamping force.They are widely used in sealing media such as water,seawater,air,inert gases,and weak acidic or alkaline salt solutions.In unplanned maintenance operations at petrochemical plants,60%to 80%of work involves repairing sealing systems.A seemingly insignificant rubber gasket directly determines whether a pipeline can operate safely and reliably.
Chemical and Corrosive Media:Material Selection Is Key
Chemical environments place the harshest demands on rubber gaskets.Nitrile rubber(NBR),known for its oil resistance,is commonly used in petroleum-based applications;chloroprene rubber excels in oxygen and ozone resistance;fluororubber,with exceptional corrosion resistance,is ideal for highly acidic,alkaline,and high-temperature steam conditions.Choosing the wrong material causes the gasket to swell,gain weight,soften,and become sticky in service.Once swelling exceeds 30%,the gasket becomes unusable,and leakage is almost inevitable.
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Food and Pharmaceutical Industries:Cleanliness and Compliance Are Non-Negotiable
In food and pharmaceutical industries,gaskets must meet more than just leak-free standards—they must also be clean and compliant.Food-grade EPDM rubber gaskets are non-toxic and contamination-free,making them suitable for pharmaceutical and food processing pipelines.Silicone rubber gaskets,naturally pure,are frequently used in food production systems.These gaskets must withstand repeated steam sterilization cycles,requiring materials that meet both sealing performance and hygiene compliance standards.
Automotive and Machinery:The Invisible Hero of Vibration Damping
In automotive applications,rubber gaskets are molded into various shapes as vibration-damping and noise-reducing pads,installed at engine,brake,and hydraulic system joints to prevent fluid leakage and absorb vibrations.Similarly,bolted and flanged connections in construction and agricultural machinery rely on rubber gaskets to isolate water,dust,and lubricants.
Given such diverse applications and vastly different operating conditions,Jingdong Rubber Co.,Ltd.has specialized in rubber sheet manufacturing for over 40 years since 1985.As a drafting unit for the national standard”Industrial Rubber Sheets-GB/T 5574-2008,”the company’s natural rubber sheets achieve a tensile strength of up to 24 MPa and demonstrate outstanding resilience,quickly returning to their original shape after compression.Its product line includes natural rubber sheets,fluororubber sheets,nitrile rubber sheets,EPDM rubber sheets,oil-resistant rubber sheets,and anti-static rubber sheets,all available in custom-cut sizes.From piping flanges to food lines,from chemical equipment to automotive seals,the right material solution is always available.
Jingdong Rubber Co., Ltd. is a professional rubber sheet manufacturer, producing silicone rubber sheet, natural rubber sheet, fluorine rubber sheet, neoprene rubber sheet, insulating rubber sheet,EPDM rubber sheets, oil-resistant rubber sheets, anti-static rubber sheets, flame-retardant rubber sheets, conductive rubber sheets, anti-slip rubber sheets, and cowshed mats, etc. with over 40 years of industry experience, are popular both at home and abroad. If you need any of our products,please send emails to ventas@jingdongrubber.com.