Our Blog
Guides, tips, and industry knowledge on sealing solutions for automotive, aerospace, and general industries.
O-Ring Failure Analysis: 8 Leak Patterns and What They Tell You
Before you throw the failed ring away, inspect it. Extrusion, spiral marks, compression set, heat cracks, swelling and RGD each leave a distinct signature — and each points to a different fix.
FKM/Viton O-Rings Guide: Grades, Chemical Resistance and When They're Worth It
Type A, B, F, GF and GLT are not marketing suffixes — they are different fluorocarbon chemistries. A practical map of FKM grades, temperature limits, fuels, chemicals and the fluids even Viton cannot survive.
AS568 Dash Numbers Decoded: How the -0XX to -9XX Series Work
The dash number on an O-ring bag is a compressed geometry specification. Here is how to read -1XX to -9XX series, what the numbers do and do not tell you, and how to select a dash size from a groove.
X-Ring (Quad Ring) vs O-Ring: When the Four-Lobed Design Wins
X-rings fit the same grooves as O-rings but seal differently: lower friction, no spiral twist, and double contact lines. Where they pay off — and where a plain O-ring is still the better buy.
Shore A Hardness Explained: Why 70 Duro Is the Default and When to Pick 50, 80 or 90
Durometer is the second most important O-ring specification after size. What Shore A means, how 50/70/90 durometer behave in service, and the pressure logic behind choosing harder or softer rings.
How to Measure an O-Ring Correctly (ID, OD & Cross-Section)
A caliper, three measurements, and a simple formula — the correct procedure for measuring an O-ring, including large rings, used rings, and the common mistakes that lead to wrong orders.
How to Order Custom O-Rings: The 8 Specifications Your Supplier Actually Needs
Most RFQ delays come from missing information. These eight items — from application and media to hardness and approvals — are what let a manufacturer quote and produce custom O-rings in one pass.
NBR vs FKM O-Rings: How to Choose Without Overspending
Nitrile and fluorocarbon look identical and both seal oil — but FKM can cost 5–15× more. Here is how to decide which compound your application actually needs.
O-Ring Size Chart: AS568, Metric & JIS Standards Explained
AS568 dash numbers, ISO 3601 metric sizes, and JIS B 2401 — how the three mainstream O-ring size standards are organized and how to read each chart.
Six Sigma Quality and Process Capability — What It Really Means for O-Rings
What Six Sigma Quality means in the O-ring industry, how process capability (Cp) is measured, and why a vendor's Cp score matters more than a brochure.
Elastomer Materials for O-Rings — Comparing FFKM, FKM, EPDM, NBR, VMQ and More
A side-by-side reference of the eight commonly used O-ring elastomers — Simriz FFKM, ETP, Aflas TFE/P, FKM, EPDM, NBR, silicone VMQ, and fluorosilicone FVMQ — covering temperature range, properties, and chemical compatibility.
Extrusion Gap and Other Groove Details — Designing O-Ring Grooves That Do Not Fail Under Pressure
How to keep an O-ring from extruding into the bore-rod gap, plus recommendations on wall angle, edge break, surface finish, groove radius, and installation chamfers.
Compression Squeeze, Compression Ratio, and Gland Fill — The Three Numbers That Decide Whether Your O-Ring Seals
How to compute compression squeeze, compression ratio, and gland fill for static O-ring seals — including ID-stretch cross-section correction tables and target ranges.
ID Stretch and OD Interference — Sizing the O-Ring to the Hardware
How to choose an O-ring ID or OD to minimise installation damage and wear in piston, rod, and face type seals — including allowable stretch and interference percentages.
Gland Dimension Calculations — How to Size the Hardware Around an O-Ring
How to compute gland height (H) and gland width (W) for piston, rod, and face type O-ring seals, plus how to read the O-ring dimensions diagram.
What Is an O-Ring? A Practical Introduction to Static Sealing
A beginner-friendly overview of O-rings, why the term "compression" is used instead of "deformation", and the three fundamental gland types used in static sealing.
How to Choose the Right O-Ring Material for Your Application
NBR, FKM, EPDM, or silicone? A practical guide to matching O-ring materials with your operating environment — temperature, media, and pressure.
Understanding Oil Seal Types: TC, EC, VA/VS and More
From TC double-lip seals to cassette seals — how each oil seal design works and which applications they suit best.
5 Common Causes of Seal Failure and How to Prevent Them
Most seal failures are preventable. Learn the top failure modes — from improper installation to chemical attack — and how to avoid them.
Food-Grade Sealing Solutions: What the F&B Industry Needs to Know
FDA-compliant silicone seals, hygienic design, and cleanroom manufacturing — the essentials of sanitary sealing for food and beverage processing.