Cryo-Ring Seals

Why Choose Vulcan Seals Cryo-Ring™ FEP / PFA Encapsulated Products?

Vulcan Seals Cryo-Ring™ is the perfect low-cost O-ring sealing solution for cryogenic applications, where low temperature demands are required. Liquid Oxygen or Hydrogen are ideal applications for a Cryo-Ring™ or Cryogenic seals due to it’s lower temperature operating limit of -250°C (-418°F) compared to an encapsulated Silicone core limited to -60°C (-75°F).

With a 302 Stainless Steel spiral wound spring, encapsulated with either an FEP or PFA, a Cryo-Ring™ or Cryogenic seal is used within a wide variety of industries such as transportation, food, pharmaceutical and chemical.

• Widest temperature encapsulated sealing ‘O’-ring

• No cold flow problems due to the Stainless Steel elastomer core, unlike solid PTFE ring

• Virtually any cross-section and diameter size or shape of seals can be produced to meet your application

• Full traceability through production and multi-level automated inspection to ensure high product quality and reliability

• Guaranteed stock of materials for all BS ISO 3601-1/AS 568 sizes, with short lead times

Cryo-Ring Seals
Material Options

• Encapsulation: FEP / PFA

• Inner core: 302 Stainless Steel spring

Temperature Range

• FEP = -250°C to +205°C (-418°F to +400°F)

• PFA = -250°C to +260°C (-418°F to +500°F)

Venting

For applications where pressure demands exceed 100 bar, ventilation holes are to be placed within the encapsulation to prevent encapsulation rupture.

Sizes and Tolerances

Cross section Cross section tolerance
1.78 -0.08 / +0.12
2.62 -0.08 / +0.12
3.53 -0.08 / +0.15
5.33 -0.13 / +0.20
6.99 -0.15 / +0.23
8.00 -0.16 / +0.24

Note: Dimensions in mm

Internal Diameter Tolerances
Internal Diameter Internal Diameter Tolerance -/+
12.71 - 25.40 0.25
25.41 - 38.10 0.30
38.11 - 50.80 0.45
50.81 - 63.50 0.55
63.51 - 88.90 0.61
88.91 - 101.60 0.71
101.61 - 127.00 0.79
127.01 - 152.40 0.94
152.41 - 177.80 1.02
177.81 and upwards 0.50%

Note: Dimensions in mm

Get in Touch

Email

Reach us at
contact@vulcanseals.com

Phone

Call us at
+44 (0) 114 249 3333

Office

Vulcan Seals
The South West Centre, Troutbeck Road, S8 0JR, Sheffield, UK
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Our products are expertly designed to meet and exceed reliability, compliance and performance expectations.

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Our products are expertly designed to meet and exceed reliability, compliance and performance expectations.