John Deere Cotton Picker Oil Seals, Lint Cleaning Discs, Water Cup Accessories

• Customization: Available
• Application: Agricultural
• Certification: ISO, FDA, REACH, RoHS
• Transport Package: Packaging Box Cardboard Box
• Trademark: Anran
• Origin: China Hebei
• HS Code: 4016931000
• Production Capacity: 1000000pieces/Year

Product Description

The customization process for rubber products is a systematic approach to processing rubber materials tailored to product requirements. It encompasses material selection, performance optimization, and the adjustment of process parameters. The following outlines the core processes and technical aspects, as informed by industry practice:

1. Raw Material Preparation and Pretreatment

1. Main Material Selection
Depending on the product's intended use, select the appropriate type of raw rubber, such as natural rubber (for high elasticity), nitrile rubber (for oil resistance), silicone rubber (for high temperature resistance), etc.

2. Compound Agent Dispensing
Add vulcanizer (sulfur or peroxide), promoter, anti-aging agent, filler (carbon black or white carbon black), etc., and customize the performance by accurate weighing (with an error of 0.1%)

3. Treatment of Reinforcement Materials
The skeletal material (steel wire or fiber) should be pretreated by soaking in rubber and drying at 60-70ºC to enhance the binding strength with the rubber.

2. Plastic Refining Process
Lower the molecular weight of the raw glue through mechanical extrusion (using an opening machine) or thermal oxidative degradation (using a compacting machine) to improve plasticity.

1. Mechanical Plastic Smelting: Maintain a temperature of 60ºC and reduce the viscosity to below 60.
2. Thermoplastic Refining: Suitable for natural rubber pretreatment, introduce compressed air.

3. Mixed Refining Process
Uniformly disperse the mixture in the rubber refining machine to form a mixed rubber with consistent properties.
Key control points: temperature (≤120°C), time (5-15 minutes), and roll distance (1-3mm)
Customized adjustments
1. For high wear-resistant products: increase the carbon black content to 40-50 parts
2. For high temperature resistant products: add zinc oxide (5-8 parts) and a silane coupling agent
4.moulding process

Placement forming	Suitable for rubber plate and sealing strip, need to control the adhesive thickness tolerance ± 0.1mm
Squeeze and shape	For the hose and sealing ring, the mouth die design directly affects the accuracy of the section
Modular pressure molding	Metal-rubber composite mold should be used for the complex structure
injection mo(u)lding	Complex structural parts are multi-material composite components

5. Full Test of Finished Products
(1) Appearance Inspection: Examine the surface for bubbles, cracks, dimensional tolerances (± 0.1mm), and color uniformity. Utilize vernier calipers, micrometers, and other tools for measurement.

(2) Physical Performance Test
1. Tensile Strength: Measure the fracture strength and elongation rate in accordance with the GB/T 528-2009 standard.
2. Hardness Test: Employ a Shore hardness meter (Type A/D) for measurement, conforming to the ISO 7619-1:2010 standard.
3. Abrasion Resistance: Assess wear resistance using a clone wear test machine.
(3) Chemical performance test
 

Oil resistance	Soak in mineral oil or solvent for 72 hours to measure volume rate of change (e. g. 30% in NBR tube)
resistance to chemical attack	The immersion test was used to evaluate the tolerance of acid and alkali (e. g. fluorine rubber and concentrated sulfuric acid) aging performance test
heat deterioration	Placed in 150ºC oven for 72 hours to test hardness change (e. g. silicone rubber 15%)
ultraviolet radiation aging	Use the xenon lamp aging tester to simulate 500 hours of light

 

1. Environmental protection and safety testing

  

RoHS check	Screening for lead, mercury, cadmium and other harmful substances, the limit of 1000ppm (such as rubber for electronic accessories)
Food contact safety	Total migration (10 mg/dm²) and specific migration (e. g. heavy metals) were tested according to GB 4806.11-2023 standard
biocompatibility	The total number of colonies (100 CFU / g) and sensitization were tested by the ISO 10993 standard

6. Quality control
1. Data record and traceability: establish complete inspection records, including test date, items, results and treatment measures of nonconforming products
2. Treatment of nonconforming products: immediately isolate defective products, analyze the causes (such as formula deviation and process control) and take corrective measures

7.Test standards and equipment

surveillance project	Core standards	Typical equipment
tensile property	GB/T 528-2009,ISO37-2005	tensile machine
hardness	GB/T 531.1-2008,ASTM D2240	Shore durometer
Ozone-resistant aging	GB/T 7762-2022	ozone box
Food contact safety	GB 4806.11-2023	Analog migration Tester
RoHS check	IEC 62321-7-2017	X ray fluorescence spectrometer

8.Performance parameters and recommendations of rubber materials
(1) Rubber materials and characteristics

native rubber(NR)	High elasticity (tensile strength 20-25MPa), wear resistance, tear resistance, but poor oil resistance and ozone resistance
styrene-butadiene rubber(SBR)	Excellent wear resistance (low cost), but the elasticity, tear resistance is weaker than natural rubber
butadiene rubber(BR)	Outstanding cold resistance (-70ºC is still elastic), wear resistance, but low strength, poor tear resistance
Ding eyes rubber(NBR)	Excellent oil resistance (mineral oil, lubricating oil), low compression permanent deformation, but poor low temperature resistance
ethylene-propylene rubber(EPDM)	Optimal weather resistance, ozone resistance, high temperature resistance (150ºC), good electrical insulation, but poor oil resistance
chloroprene rubber(CR)	Good aging resistance, ozone resistance and flame retardant, but poor low temperature performance (brittle below-30ºC)
silastic(VMQ)	Temperature resistance range (-70~300ºC), excellent biocompatibility, but low mechanical strength
fluorine(-containing)rubber(FKM)	High temperature resistance (250ºC), strong acid and alkali resistance, oil resistance, but poor air permeability, high processing difficulty
hydrogenated butadiene-acrylonitrile rubber (HNBR)	Oil resistance, high temperature resistance is better than ordinary NBR, wear resistance is strong
chlorosulfonated polyethylene(CSM)	Resistance to strong acid and strong alkali (such as concentrated sulfuric acid), ozone resistance, but poor oil resistance
urethane rubber(PU)	Excellent wear resistance (high Shaw hardness), tear resistance, but poor oil resistance, weak weather resistance
acrylic rubber(ACM)	High temperature resistance (200ºC), oil resistance (such as ester lubricating oil), but poor cold resistance

(2)Comparison of key performance parameters

index	NR	NBR	FKM	SIR	EPDM
Temperature resistance range	-60~100ºC	-25~130ºC	-20~250ºC	-70~300ºC	-60~150ºC
oil resistivity	insufficient	excellent(NBR40)	extremely excellent	insufficient	insufficient
ozone resistance	insufficient	insufficient	excellent	excellent	excellent
abrasion performance	excellent	middle	middle	insufficient	excellent
Electric insulation	excellent	insufficient	insufficient	excellent	excellent

(3)Suggestions for type selection

Oil resistance scene	Nitrile rubber (NBR) or fluorine rubber (FKM) is preferred
hot environment	Silicone rubber (VMQ) or fluorine rubber (FKM)
resistance to chemical attack	Chlorosulfated polyethylene (CSM) or fluorine rubber (FKM)
dynamic packing	Ethpropylene rubber (EPDM) or polyurethane rubber (PU)

Utilizing cutting-edge production equipment and a wealth of technical expertise, we can custom-design a range of rubber and plastic products with various specifications and materials.