Custom Designed & Manufactured Viton Shaft Seal for a Snow Blower
Clark Seals, Ltd. was contacted by a leading manufacturer of snow blowers to solve their leaking seal problem.
After extensive review of their equipment and thorough analysis of the application, it was determined that the cause of leakage was a fairly common problem found in seasonal equipment. Mowers, agriculture equipment, watercraft and motorized vehicles all go through periods of heavy use and long storage, causing some rubber compounds to compress and relax for extended periods of time and loosen their dimensions and compression properties.This problem is further enhanced in seasonal equipment where run-out and shaft/housing misalignment is common.
The solution, as with most seasonal equipment, was to design a seal with extreme follow ability to resist compression set and stress relaxation at low temperatures, improve reaction ratio and increase lip force contribution from the garter spring since stainless steel springs are not subject to stress relaxation.
This custom sealing solution took one week to develop, was less expensive than their previous seal and ultimately reduced warranty claims by 94%.
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Custom Shaft Seal Specifications
- Product Name
- Snow Blower Seal
- Product Description
- Shaft Seal used in snow blower motor to prevent leakage caused from rubber stress relaxation of seasonal equipment
- Capabilities Applied/Processes
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- Problem Seal Analysis
Custom AutoCAD Seal Design - Precision Manufacturing
- Problem Seal Analysis
- Overall Dimensions of the Seal
- Ö1.580x 0.197 ( OD x H )
- Tightest Tolerances Met
- RMA standards, .001"
- Material Used
-
- ELASTOMER: VITON
METAL CASE: carbon steel - SPRING: Stainless steel spring
- ELASTOMER: VITON
- Benefits
-
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- Resists Compression Set and Stress Relaxation @ Low Temperatures
- Remains More Flexible During Long Periods of Idleness
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- Design a bumper ring to prevent spring to be displaced with a narrow seal
- Elastomer with low friction coefficient ingredients.
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- In process testing performed
- Customer Life-Test
- Estimated Part Weight
- 0.022lbs
- Standards Met
- RMA Standards
Elastomer spec.: SAE J200 M4HK 814
Metal case material spec.: SAE 1008
Spring material spec.: SAE 30304
- Industry for Use
- Outdoor Power Equipment
- Delivery Location
- Kohler,Wisconsin