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Home Product 15*21*4 High Precision Flange Bearing, Low Friction, CNC Machinery, Robotics, OEM Replacement Part
15*21*4 (precision level)

15*21*4 High Precision Flange Bearing, Low Friction, CNC Machinery, Robotics, OEM Replacement Part

15x21x4 precision seals
15x21x4 mechanical seals
precision o-ring seals
15*21*4 (precision level)
15x21x4 precision seals engineered for high-performance mechanical applications. Robust 15x21x4 mechanical seals and precision o-ring seals deliver leak-proof reliability in extreme conditions. Optimal durability for industrial machinery and equipment.
Categories:Power Transmission
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Product Description

The 15x21x4 precision seals are high-performance components designed for demanding industrial applications requiring exceptional sealing accuracy and durability. Engineered as precision o-ring seals or 15x21x4 mechanical seals, they ensure reliable operation in hydraulic systems, fluid transfer equipment, and precision machinery. These seals support direct integration with rotating shafts, pumps, and valves, maintaining consistent performance across a wide operating voltage range (12-48V DC) and temperature extremes from -50°C to +200°C. Ideal for aerospace, automotive, and heavy machinery sectors, their compact 15x21x4 mm dimensions optimize space-constrained installations while delivering minimal friction and leakage. Key advantages include superior chemical resistance and extended service life under high-pressure conditions (up to 600 bar), though installation requires specialized tools for optimal compression. The precision-machined surfaces and elastomer compatibility enable effective contamination exclusion in critical motion systems.
Parameter Specification
Type 15x21x4 Precision O-Ring Seals (Mechanical Seals)
Dimensions 15 mm (ID) x 21 mm (OD) x 4 mm (Thickness)
Material Fluorocarbon (FKM) / High-Performance Elastomers
Temperature Range -20°C to +200°C
Pressure Rating 0.1 MPa to 20 MPa
Surface Finish Ra ≤ 0.4 µm (Polished Contact Surfaces)
Tolerance ±0.05 mm (Radial) / ±0.02 mm (Axial)
Application Rotary Shafts, Hydraulic Systems, Pneumatic Valves
Certification ISO 3601-1 / ASTM D2000
Features High Compression Set Resistance, Anti-Extrusion Design
question:Do you accept payment after delivery?
answer:We require upfront payment for new clients. Established partners may qualify for flexible terms after evaluation.
question:Can you share shipment photos or purchase dates for similar products?
answer:We provide product documentation upon request after formal inquiry. Specific shipment evidence requires executed contracts.
question:If models are discontinued, why do competitors still supply them?
answer:Suppliers occasionally source obsolete components through surplus channels, but we prioritize certified current inventory for reliability.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Do you accept payment after delivery?
answer:We require upfront payment for new clients. Established partners may qualify for flexible terms after evaluation.
question:Can you share shipment photos or purchase dates for similar products?
answer:We provide product documentation upon request after formal inquiry. Specific shipment evidence requires executed contracts.
question:If models are discontinued, why do competitors still supply them?
answer:Suppliers occasionally source obsolete components through surplus channels, but we prioritize certified current inventory for reliability.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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