Case Studies & Customer Success
Real-world sealing challenges solved with the right material, dimensions, and manufacturing process.
Overview
Our customers range from hydraulic equipment OEMs to pharmaceutical manufacturers. What they share is a need for seals that perform reliably under demanding conditions. Below are representative examples of how we have helped clients solve sealing problems.
Case Studies
Oil & Gas Wellhead Sealing: Extending Seal Life from 3 Months to 18 Months
Challenge: A wellhead equipment manufacturer needed FKM O-rings that could handle sour gas (H2S) at 150°C and 300 bar, but standard FKM grades showed compression set after short service intervals.
Solution: We specified a high-fluorine FKM compound with 90 Shore A hardness and supplied back-up rings to prevent extrusion into clearance gaps.
Result: Seal life extended from 3 months to over 18 months, eliminating unplanned wellhead maintenance during production seasons.
Pharmaceutical Bioreactor Sealing: Reducing Assembly Rejects from 4% to 0.5%
Challenge: A bioreactor OEM required USP Class VI silicone O-rings for repeated autoclave cycles (134°C steam), but existing suppliers had inconsistent lot-to-lot dimensions.
Solution: We switched the customer to our VMQ USP Class VI grade with tighter ID tolerances and provided lot-specific dimensional reports.
Result: Assembly reject rate dropped from 4% to under 0.5%, and the OEM qualified us as an approved vendor for all future bioreactor programs.
Food & Beverage CIP Sealing: Passing 1,000+ Clean-in-Place Cycles
Challenge: A beverage dispensing equipment maker needed FDA-grade EPDM seals that would not impart taste or odor, while resisting aggressive CIP chemicals.
Solution: We recommended a peroxide-cured FDA EPDM compound with optimized accelerator package for low extractables and high CIP chemical resistance.
Result: The compound passed taste-and-odor testing and maintained sealing performance through over 1,000 CIP cycles.
Hydraulic Cylinder Cold-Start Sealing: Eliminating Spiral Failures at -25°C
Challenge: A mobile hydraulic cylinder builder had recurring spiral failures on NBR rod seals in cold-start conditions (-25°C).
Solution: We upgraded the material to a low-temperature NBR compound (LT-NBR) capable of -40°C, and adjusted groove width to reduce twist risk.
Result: Spiral failures were eliminated, and the customer expanded the product warranty from 1 year to 2 years.
Automotive Turbocharger Sealing: Preventing Oil Leakage at +200C
Challenge: A Tier-1 automotive supplier experienced oil leakage from turbocharger oil feed lines during extended high-boost operation, where temperatures cycled between ambient and +200C.
Solution: We upgraded the seal specification from standard FKM to a high-fluorine FKM Type 2 compound with 80 Shore A hardness and tighter tolerance control.
Result: Oil leakage was eliminated across 500,000+ vehicle field miles. The supplier qualified the compound for three additional turbo platforms.
Semiconductor Wet Bench Sealing: Reducing Particle Count by 40%
Challenge: A semiconductor wafer processing equipment OEM needed seals for a sulfuric acid wet bench that would not shed particles or degrade in aggressive chemistries.
Solution: We specified FEP encapsulated VMQ O-rings with ultra-clean washing and double-bag packaging to eliminate contamination.
Result: Particle count in the wet bench decreased by 40%, and mean time between seal replacements increased from 6 months to 14 months.
Aerospace Fuel System Sealing: Meeting AMS-R-83485 in 4 Days
Challenge: An aerospace MRO supplier needed AMS-R-83485 compliant FKM O-rings for a fuel pump overhaul with an AOG (aircraft on ground) deadline of 72 hours.
Solution: We supplied certified AMS-R-83485 FKM O-rings from stock with full batch traceability and material certification.
Result: The parts were delivered in 48 hours with complete documentation, allowing the fuel pump to be returned to service ahead of the AOG deadline.
Medical Device Sealing: Implant-Grade Silicone for Dialysis Equipment
Challenge: A medical device manufacturer needed implant-grade platinum-cured silicone O-rings for a peritoneal dialysis cycler that would pass USP Class VI and ISO 10993 biocompatibility testing.
Solution: We supplied USP Class VI platinum-cured VMQ O-rings with full lot traceability, biocompatibility certificates and dimensional reports.
Result: The seals passed all ISO 10993-5 cytotoxicity and ISO 10993-10 sensitization tests, and the device received FDA 510(k) clearance.
What Our Customers Say
"The response time and engineering support were excellent. They helped us select the right FKM grade for a high-temperature fuel system, and the samples arrived in 4 days."
- Procurement Manager, Aerospace Component Supplier
"We have been sourcing custom silicone O-rings from O-Ring Supply Co. for two years. Dimensional consistency and certificate documentation have been flawless."
- Quality Director, Medical Device Manufacturer
"No minimum order quantity means we can prototype new designs without committing to thousands of parts. That flexibility is why we keep coming back."
- R&D Engineer, Fluid Power OEM
Trusted By
Aerospace Component Supplier
Aerospace
Medical Device Manufacturer
Medical
Fluid Power OEM
Hydraulics
Bioreactor OEM
Pharmaceutical
Wellhead Equipment Manufacturer
Oil & Gas
Beverage Dispensing Equipment Maker
Food & Beverage
Semiconductor Equipment OEM
Semiconductor
Tier-1 Automotive Supplier
Automotive
Frequently Asked Questions
Can you sign an NDA before reviewing our drawings?
Yes. We routinely sign non-disclosure agreements with OEM customers before receiving proprietary drawings or application data.
Do you work directly with engineering teams?
Yes. Our technical sales staff includes engineers who can review groove designs, recommend materials, and troubleshoot failures. You will speak directly with the person setting your cure parameters.
Have a Sealing Challenge?
Tell us about your application and we will recommend a solution.