NBR O-Rings 70 Shore A Hardness for AS568, JIS B2401, ISO 3601/1 Standards
Price:
Negotiable
MOQ:
1000
Delivery Time:
5-8 work days
Brand:
FOLON.A
Product Description
NBR O-Rings for Industrial Sealing Applications
NBR O-rings provide reliable sealing solutions for both dynamic and static applications across various industries. These cost-effective sealing components are manufactured to meet international quality standards including AS568, JIS B 2401, and ISO 3601/1 specifications.
O-Ring Selection Criteria
Material Compatibility and Working Conditions
When selecting O-ring materials, consider compatibility with working media, pressure requirements, temperature ranges, continuous operation time, and operating cycles. For rotating applications, account for temperature rise from frictional heat. Different sealing materials offer varying physical and chemical properties.
Seal Configuration Types
O-rings are categorized by:
- Load Type: Static seal or dynamic seal
- Sealing Purpose: Piston seal, shaft seal, or rotary shaft seal
- Mounting Type: Radial mounting or axial mounting
For radial shaft seals, minimize deviation between O-ring inside diameter and sealed diameter d2. For piston seals, inside diameter should equal or slightly exceed groove diameter d1.
Performance Factors
Material Hardness (70 Shore A Standard)
O-ring hardness is a critical performance indicator that determines compression levels and maximum allowable extrusion gap. Standard 70 Shore A nitrile rubber meets most application requirements, with alternative hardness specifications available upon request.
Extrusion Gap Specifications
Maximum allowable extrusion gap (Emax) correlates with system pressure, O-ring cross-sectional diameter, and material hardness. Higher working pressures require smaller extrusion gaps. Exceeding allowable gap range may cause O-ring extrusion or damage.
Compression Set Performance
Compression set measurement evaluates O-ring sealing performance under pressure. As elastic elements, O-rings undergo elastic deformation, with potential for permanent plastic deformation at elevated pressures.
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Company
Jiangsu Kunyuan Rubber & Plastic Technology Co.,Ltd
Location
Room 2303, Building 1, No. 218, Tianmu West Road (Kerry Night Inn), Jing'an District, Shanghai
Contact Person
Lucy