Customized Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows

Customized Neoprene Nitrile EDPM Silicone Rubber BellowsRubber Bellows are used as a cover or expansion joint to protect device or machines, which are made by rubber compression molding, rubber injection mold or extrusion tool.Rubber Bellows are designed as a cover mainly protect against d

Featured Products

Customized Neoprene Nitrile EDPM Silicone Rubber Bellows
Rubber Bellows are used as a cover or expansion joint to protect device or machines, which are made by rubber compression molding, rubber injection mold or extrusion tool.
Rubber Bellows are designed as a cover mainly protect against dust, water, oil, grease, acids, bleaches, spatter or other environment elements.

Custom Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows

 

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. 

Custom Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows  Custom Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows

Rubber Bellows Materials adoption
RUBBER COUMPOUNDS TYPES AND REFERENCES
  Material AbbreviationTemperature Range
(dry heat)
Aging Weathering 
Ozone
Oil& Grease 
Resistance
Water Swell ResistanceFlex-FatigueEconomy of
Material
Material Notes                         
 
(Neoprene)
CR-40F to 250FGoodGoodAverageVery oodGoodexposure to refrigerants,
can be compounded for FDA applications
NitrileNBR-22F to 212FPoorVery GoodGoodGoodVery GoodAutomotive Applications,
Good Oil Proof
Ethylence-PropyleneEPDM,EPM-60F to 300FVery GoodPoorVery Good GoodVery GoodOutside Applications,
Good Weather Proof
SiliconeVMQ-75F to 450FVery GoodAverageVery GoodVery GoodAverageMedical Applications
FluorocarbonFKM5F to 390FVery GoodVery GoodGoodAveragePoorRubber King,
Widely Applications

Rubber Bellows Design Guide
Custom Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows

Rubber Bellows Some Typical Applications
Expansion joints
Rod & Ball screw covers
Piping penetration seals
Fan duct connections
Compressor and engine intake and exhaust manifold connections

Different 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 Flexible Rubber Expansion Joint/Silicone Dust Cover Bellows

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 Demand
5. Working Environmment Demands
6.
Silicon Bellows Flashing Demands etc.

 

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours