AN6227 Silicone O-rings
Manufacturer & Custom Solutions

AN6227 Silicone O-rings

ZSR Silicone manufactures AN6227 silicone O-rings across all available wire diameters. If your equipment requires seals for moving joints or cylindrical fixed surfaces, we provide a choice of silicone materials to match the exact AN 6227 size you need.

  • MOQ: Flexible / Low MOQ Support
  • Lead Time: Prototype in 2-5 Days
  • Certifications: FDA, LFGB, ISO 9001, ROHS, REACH
  • Material: VMQ, FVMQ, LSR, HCR / HTV
  • Hardness: 30 to 80 Shore A (customizable)
  • Temperature: -60°C to 230°C (special grades to 300°C)
  • Custom Sizes: Per Your Drawing
  • Tooling: In-house mold design and machining
  • Samples: Free samples available

FDA 21 CFR 177.2600

Rubber Articles Intended for Repeated Use

LFGB 30&31

EU Food Contact Materials

USP Class VI / ISO 10993

Biocompatibility of Medical Devices

RoHS / REACH

Environmental Compliance

UL 94

Flammability of Plastic Materials

Built to Your Exact Spec

Custom Silicone O-ring Options

ImageProductTypeShort InfoAction
ISO 3601 Metric Silicone O-Rings ISO 3601 Metric Silicone O-Rings Standard & Size Metric silicone O-rings manufactured to ISO 3601 dimensions. Fits international equipment groove standards. View Details
ISO 6149 Metric Silicone O-Rings ISO 6149 Metric Silicone O-Rings Standard & Size Metric O-rings designed for hydraulic and pneumatic fluid power sealing applications under ISO 6149 standards. View Details
BS 1806 Silicone O-rings BS 1806 Silicone O-rings Standard & Size British Standard inch-size silicone O-rings. Common in UK and Commonwealth industrial equipment. View Details
DIN 3771 Silicone O-rings DIN 3771 Silicone O-rings Standard & Size German metric standard O-rings for hydraulic and pneumatic sealing in European machinery. View Details
Custom Molded Silicone O-rings Custom Molded Silicone O-rings Standard & Size Custom-shaped silicone O-rings molded to your exact drawing or sample. No standard size limitations. View Details
AS568 Silicone O-rings AS568 Silicone O-rings Standard & Size Inch-size silicone O-rings that follow the AS568 standard. Widely used in North American machinery and hydraulic systems. View Details
AN6227 Silicone O-rings AN6227 Silicone O-rings Standard & Size Aerospace-standard O-rings with small cross-section. Used in aviation and military-grade sealing. View Details
AN6230 Silicone O-rings AN6230 Silicone O-rings Standard & Size Aerospace-standard O-rings specified under AN6230 for aviation and military-grade sealing. View Details
JIS B2401 Silicone O-Ring JIS B2401 Silicone O-Ring Standard & Size Japanese industrial standard O-rings commonly used in Asian-manufactured machinery and automotive equipment. View Details
FDA Food Grade Silicone O-Rings FDA Food Grade Silicone O-Rings Grade Food-safe silicone O-rings compliant with FDA regulations. Safe for repeated food contact. View Details
Industrial Grade Silicone O-ring Industrial Grade Silicone O-ring Grade General-purpose silicone O-rings for industrial sealing. Cost-effective with reliable performance. View Details
Medical Grade Silicone O-ring Medical Grade Silicone O-ring Grade Biocompatible silicone O-rings for medical devices. Passes USP Class VI and supports sterilization. View Details
Oil-Resistant / Fuel-Resistant Silicone O-Rings Oil-Resistant / Fuel-Resistant Silicone O-Rings Special Function Modified silicone O-rings that resist swelling in oils, fuels and petroleum-based fluids. View Details
Metal Detectable Silicone O-Rings Metal Detectable Silicone O-Rings Special Function Food-safe silicone O-rings with metal-detectable additives. Protects production lines from contamination. View Details
High Temperature / Heat Resistant Silicone O-Rings High Temperature / Heat Resistant Silicone O-Rings Special Function Silicone O-rings that stay flexible at temperatures above 200°C. For ovens, engines and furnaces. View Details
VMQ Silicone O-Rings VMQ Silicone O-Rings Materials Heat and cold-resistant silicone O-rings for food, medical, automotive, and industrial applications. View Details
Fiberglass Reinforced Silicone O-rings Fiberglass Reinforced Silicone O-rings Materials High-strength silicone O-rings reinforced with fiberglass fabric. Withstands extreme heat and pressure. View Details
HCR / HTV / Solid Silicone Rubber O-rings HCR / HTV / Solid Silicone Rubber O-rings Materials Durable solid silicone rubber O-rings made by compression molding. The standard choice for general sealing. View Details
Liquid Silicone Rubber (LSR) O-rings Liquid Silicone Rubber (LSR) O-rings Materials Injection-molded liquid silicone rubber O-rings with tight tolerances and clean surfaces. Ideal for high-volume production. View Details
Platinum Cured Silicone O-rings Platinum Cured Silicone O-rings Materials Ultra-clean silicone O-rings cured with platinum catalyst. Lower extractables for food and medical use. View Details
Fluorosilicone (FVMQ) O-rings Fluorosilicone (FVMQ) O-rings Materials Fuel and oil-resistant silicone O-rings for aerospace, automotive and chemical applications. View Details
Transparent / Clear Silicone O-rings Transparent / Clear Silicone O-rings Color See-through silicone O-rings for visual inspection and clean-looking medical or food equipment. View Details
Black / White Silicone O-Rings Black / White Silicone O-Rings Color Standard black and white silicone O-rings. The most common colors for industrial and food-grade applications. View Details
Pantone Colors Silicone O-rings Pantone Colors Silicone O-rings Color Silicone O-rings in any Pantone color for branding, color-coding or aesthetic requirements. View Details
Custom Colors Silicone O-rings Custom Colors Silicone O-rings Color Silicone O-rings matched to your exact color sample or specification. View Details

Simple AN6227 Silicone O-rings Size Chart

  • CS: Cross-section diameter (Wire diameter)
  • ID: Inner diameter
  • OD: Outer diameter

AN6227 Standard No. Range

CS (mm)

ID Range (mm)

OD Range (mm)

CS (inch)

ID Range (inch)

OD Range (inch)

AN6227-1~7

1.78

2.90 ~ 9.25

6.46 ~ 12.81

0.070

0.114 ~ 0.364

0.254 ~ 0.504

AN6227-8~14

2.62

9.19 ~ 18.72

14.43 ~ 23.96

0.103

0.362 ~ 0.737

0.568 ~ 0.943

AN6227-15~27

3.53

18.64 ~ 37.69

25.70 ~ 44.75

0.139

0.734 ~ 1.484

1.012 ~ 1.762

AN6227-28~52

5.33

37.46 ~ 113.66

48.12 ~ 124.32

0.210

1.475 ~ 4.475

1.894 ~ 4.894

AN6227-53~88

6.98

113.66 ~ 393.06

127.62 ~ 407.02

0.275

4.475 ~ 15.475

5.024 ~ 16.024

What is AN6227 Standard?

AN6227 is an O-ring size standard based on the US military (MIL) specification. It was originally created as an aircraft O-ring series, and it is widely used in many types of equipment for both moving and fixed sealing on cylindrical surfaces.

The standard includes several different cross-sectional thicknesses (wire diameters), covering a broad range of inner and outer diameter sizes.

Every AN6227 size is exactly the same as the corresponding size in the AS568 standard, so the two can be used interchangeably.