Technical Guide
13 articles in technical guide
Cryogenic O-Ring Selection: LNG, LN2, LOX & LH2 Sealing Guide
Guide to selecting O-rings for cryogenic service. Material temperature limits, glass transition, gas permeation, compression set, and groove design for LNG and aerospace.
PTFE Encapsulated O-Rings: FEP/PFA Jacket, Core Materials & Installation
Guide to PTFE encapsulated O-rings. FEP vs PFA jacket, FKM vs silicone core, chemical resistance, temperature limits, installation, and applications.
Spring Energized Seals: Complete Engineering Guide — PTFE Jacket, Cryogenic, High Pressure
Engineering guide to spring-energized PTFE seals. Jacket materials, spring types, cryogenic and high-pressure performance, groove design, and selection criteria.
O-Ring Hydraulic Fluid Compatibility: NBR, HNBR, FKM & EPDM
Hydraulic O-ring material compatibility chart for mineral oil, phosphate ester, water-glycol and biodegradable fluids. Avoid swell, extrusion and premature failure.
O-Ring Boss (ORB) & Face Seal (ORFS) Fittings Guide
Complete guide to O-ring boss (ORB) and face seal (ORFS) hydraulic fittings. SAE/ISO standards, sealing principle, O-ring selection and torque specs.
O-Ring Material Types: Elastomer Selection Guide
O-ring material types guide covering elastomer, fluoropolymer and metal seal options. Compare NBR, HNBR, FKM, FFKM, EPDM, VMQ, FVMQ, CR, PU, AFLAS, Butyl and PTFE by temperature, chemical resistance and application.
Parker O-Ring X-Reference: Sizes, Compounds & Equivalents
Parker O-ring cross-reference. Match Parker dash numbers to AS568, decode Parker compounds (N0674, V0747) and find equivalent O-rings.
Metric vs Inch O-Rings: Can They Be Interchanged?
Learn when metric and inch (AS568) O-rings are interchangeable, how to convert dimensions, and why tolerance matters in precision assemblies.
O-Ring Extrusion: When to Use Backup Rings
Understand O-ring extrusion failure, how to calculate clearance gaps, and when PTFE backup rings are required in high-pressure sealing.
O-Ring Groove Surface Finish Requirements (Ra & Rz)
Understand Ra and Rz surface finish requirements for static and dynamic O-ring grooves to prevent leakage and abrasion.
O-Ring Lubrication Guide: What to Use and What to Avoid
Comprehensive guide to O-ring lube, grease and silicone grease for O-rings by elastomer type. Covers safe lubricants including Super Lube, Molykote 55 and Parker Super O-Lube for NBR, FKM, EPDM, VMQ, and FFKM, specific products to avoid, and recommended commercial lubricant products.
Prevent Spiral Failure in Reciprocating Seals
Spiral failure causes leaks and downtime in hydraulic cylinders. Learn the causes—and the design fixes—for twisted O-ring seals.
Static vs Dynamic O-Ring Design: Key Differences
Learn the critical design differences between static and dynamic O-ring seals, including groove width, compression, hardness, and material selection.