O-Ring V Type Size List

O-Ring V Type Size List

Japanese Standard JIS B 2401 V-Series O-Ring Sizes & Vacuum Gland Design Matrix

The V-Specification (V Series / V Type) originates from the Japanese Industrial Standard JIS B 2401 and is explicitly engineered for "High-Vacuum applications, including Vacuum Gaskets, Chamber Seals, and Flange interfaces". To anchor absolute hermetic blocking within ultra-high vacuum (UHV) regimes and prevent external atmospheric leakage, the V-series intentionally scales with thick cross-sections (such as 4.0mm, 6.0mm, and 10.0mm). This enlarged cross-sectional matrix delivers a supreme interface squeeze force and macro-deflection memory required to fill fine micro-imperfections. It serves as the baseline static metric deployed across global wafer fabrication systems, LCD panel vacuum chambers, and high-purity gas routing.

CNL SEALS tracks an extensive wholesale catalog covering the complete V15 to V430+ registry across robust vacuum-grade elastomers (including Viton™ FKM, Silicone VMQ, and cleanroom-grade FFKM perfluoroelastomers), ensuring prompt global dispatch and absolute tolerance compliance.

V-Series O-Ring Core Cross-Sections & Vacuum Gland Geometry Settings

Vacuum configurations necessitate an intensive squeeze ratio to thoroughly block gas molecule permeation. R&D engineers should strictly cross-verify these technical machining benchmarks:

  • V15 to V220 Series (Standard CS: 4.00mm ± 0.13 ): * Vacuum Static Gland Depth: Should be turned to 2.95 ~ 3.05 mm (yielding a high 24% to 26% static seal squeeze to prevent micro-leakage).

    • Gland Channel Width: Should be turned to 5.20 ~ 5.40mm, maintaining a targeted Gland Fill at 75% ~ 80% to preserve proper expansion clearance.

  • V225 to V475 Series (Standard CS: 6.00mm ± 0.15 ): * Vacuum Static Gland Depth: Should be turned to 4.45 ~ 4.60 mm.

    • Gland Channel Width: Should be turned to 7.80 ~ 8.10mm.

  • V480 to V1055 Series (Standard CS: 10.00mm ± 0.22 ): * Vacuum Static Gland Depth: Should be turned to 7.40 ~ 7.60 mm.

    • Gland Channel Width: Should be turned to 13.0 ~ 13.5mm.