22 cm Reusable PCM Helmet Cooling Liner for OEM Programs

Segmented PCM liner for helmet-accessory sourcing

This reusable 22 cm PCM liner uses a circular fan-shaped layout divided into multiple chambers. It is intended for buyers developing a cooling accessory for selected work helmets, hard hats or cycling helmets. Because helmet interiors differ, the product should be treated as a component that requires exact-model fit approval rather than a universally compatible insert.

Buyer facts and confirmation points

Why helmet fit must be checked on the real system

The segmented pattern may help the sample follow a curved interior, but geometry alone does not prove safe or comfortable compatibility. During sampling, check the available clearance, contact with the suspension and padding, ventilation paths, retention-system movement and the liner’s position during normal donning and removal. The accessory must not be described as preserving helmet fit, protection or certification unless the relevant helmet and use configuration have been reviewed.

Helmet-liner sample checklist

• Exact helmet manufacturer, model, size and suspension configuration
• Overall diameter, thickness, chamber placement and seal width
• Clearance from padding, straps, retention hardware and ventilation openings
• Whether a fastening or anti-slip method is required
• PCM phase behavior and condition under the agreed preparation method
• Mass, balance and position inside the intended helmet
• Seal appearance, filling distribution and post-conditioning condition
• Color, logo, instructions, individual pack and carton configuration

How to substantiate temperature and duration

A PCM temperature should be presented as a nominal phase-change specification supported by the exact material and product record. It should not be rewritten as a promise that the wearer receives one constant temperature. Any duration statement also needs defined test conditions, including the starting condition, ambient environment, airflow, helmet assembly and endpoint. Until those records are available, this page should not publish a numeric temperature or cooling-time claim.

OEM decisions for a repeatable specification

Cryozin’s customization process supports discussion of dimensions, chamber layout, filling system, color, logo, instructions and packaging. The suitable configuration remains subject to engineering, sample and commercial confirmation. Buyers should provide the intended helmet models, target market, use environment, expected quantity, artwork, pack-out and required documentation.

The material selection guide can help organize questions about PCM and outer materials. It describes company-level options and should not be treated as proof that a particular material, PCM grade or performance figure is included in this SKU.

Neutral and blue appearance options

No performance difference between the colors is claimed. If geometry, material, PCM and included components are the same, the two appearances should be managed as variants of one product family rather than separate technical products.

Quality and documentation scope

The approved drawing, sample, PCM specification and instructions should become the reference for production and inspection. Project-specific checks can cover dimensions, filling weight and distribution, phase-change behavior, seal condition, appearance, color, print and packaging. The exact method, sampling frequency and acceptance criteria must be agreed for the configuration.

See Cryozin’s quality-control process. Available testing and documentation are confirmed according to the product, target market and agreed project requirements; general certificates or reports should not be presented as automatically applying to this liner.

Frequently asked sourcing questions

Does a nominal PCM temperature mean the liner stays at exactly that temperature?

No exact performance statement should be made without the approved PCM specification and defined-condition product test. A nominal phase-change point is a material specification, not a guarantee of one constant user temperature.

How long does one cooling cycle last?

Duration depends on the product specification, preparation method, ambient conditions, airflow, helmet assembly and endpoint. Request the test method and result that apply to the exact sampled configuration rather than relying on a generic time range.

Will the liner fit every hard hat or bicycle helmet?

No universal fit is claimed. Test the sample with each intended helmet model and confirm that it does not interfere with the suspension, padding, ventilation, retention or manufacturer instructions.

Which chamber and PCM materials are included?

The exact shell/laminate and PCM grade must be confirmed in the product specification. A general material option shown elsewhere on the website does not establish the construction of this SKU.

What should be included in the approval record?

Record the helmet model, dimensions, chamber layout, material and PCM specification, preparation instructions, fit result, inspection points, color, artwork and packaging. This creates a clearer reference for production and repeat orders.

Prepare a useful inquiry

Send the intended helmet make and model, target market, use environment, color requirement, expected quantity, artwork, packaging and documentation needs. Cryozin can then organize the required fit, specification and sample questions before quotation. Submit the project brief or learn more about Cryozin.

Related category and appearance option

Browse PCM Cooling Hats & Head Ice Packs. Until consolidation is implemented, buyers can also view the blue appearance listing.