AS568 Standard Dimension Compatibility
AS568 Standard FKM O Rings follow the AS568 dimensional system, which defines standard inside diameter and cross-section sizes for O ring selection. This allows engineers to identify replacement seals based on existing equipment requirements, drawings, or original part specifications.
AS568 Size Identification
Each AS568 size is assigned with a standard identification code that corresponds to a specific inside diameter and cross-section combination. Customers can select the required O ring by matching the AS568 size reference with the equipment sealing requirements.
Groove Size Matching
The selected O ring size should be matched with the gland design, including groove width, groove depth, and clearance gap. Proper dimension matching ensures suitable compression after installation and helps avoid sealing issues caused by incorrect sizing.
Standard & Custom Supply
Chaoyue supplies standard AS568 FKM O Ring sizes and supports customized requirements, including special dimensions, material compounds, hardness levels, and packaging options for different sealing applications.
AS568 Standard FKM O Rings Performance Advantages
- Oil & Fuel Resistance
FKM material provides resistance to many petroleum-based fluids, including oils, fuels, and lubricants, helping maintain sealing performance in fluid-contact applications.
- High Temperature Capability
FKM maintains its sealing properties under elevated temperature conditions. The applicable temperature range depends on the specific compound formulation and operating environment.
- Compression Stability
FKM O Rings maintain controlled deformation after compression inside the groove, helping preserve sealing contact and dimensional stability during long-term service.
Quality Control & Dimensional Inspection
Chaoyue controls AS568 FKM O Ring production through dimensional inspection and material verification to maintain consistency between production batches. Inspection focuses on the sealing dimensions and physical properties required for assembly compatibility.
Dimensional Measurement
Key dimensions including inside diameter, outside diameter, and cross-section are measured according to specification requirements. Dimensional control helps ensure the O ring fits the designed groove and replacement applications.
Hardness Verification
Shore A hardness testing is performed to verify that the rubber compound meets the specified hardness range. Consistent hardness helps maintain predictable compression behavior during installation.
Surface Inspection
Each production batch is checked for visible defects such as surface damage, molding marks, flash, and contamination that may affect sealing contact or assembly performance.
FAQ
What is the difference between AS568 O Rings and metric O Rings?
AS568 O Rings use inch-based dimensional standards, while metric O Rings are defined by metric measurements. The selection depends on the existing equipment design, groove dimensions, and replacement requirements.
How can I identify the correct AS568 Standard FKM O Rings size?
The correct size can be confirmed through the AS568 size reference, existing part number, equipment drawing, or measurement of the original O Ring, including inside diameter and cross-section.
Can AS568 O Rings be used as replacement seals for existing equipment?
Yes. AS568 standard sizes are commonly selected for replacement applications where the original sealing groove is designed according to AS568 dimensions. The groove condition and installation requirements should be checked before replacement.
What information is needed when ordering AS568 FKM O Rings?
Customers usually provide the AS568 size reference, material requirement, hardness, quantity, application conditions, and packaging requirements. Drawings or samples can also be provided for confirmation.
