Gel Sealing Requirements for Nuclear Ventilation HEPA Filters and Iodine Adsorbers

New nuclear build, life-extension of existing plants and nuclear fuel cycle projects worldwide require qualified, fully documented HVAC consumables. Nuclear procurement prioritizes batch consistency, traceability and quality plans over price, and suppliers must support source inspection and long-term documentation retention. Hong Ye supplies gel with full COA, viscosity and penetration test data, batch traceability and RoHS/REACH documentation, and can align with customer-specific quality plans. While nuclear projects demand lengthy qualification, the specified material volumes across filter fleets and their replacement cycles represent a stable, high-value segment for qualified suppliers.

2 Product Requirements

Nuclear ventilation sealing requires: essentially zero-leakage knife-edge seals; extremely low outgassing with no condensation by-products that could contaminate carbon beds; radiation and long-term aging resistance; decade-scale service life; full batch traceability and COA data; support for customer quality plans and source inspection; and visual fill confirmation.

3 Corresponding Product Model Parameters

Recommended model: HY-9400 - Blue high-tack grade for HEPA/ULPA filter gel channels and cleanroom seals

4 Frequently Asked Questions

Q: Does the gel release anything that could poison iodine adsorber carbon?

A: No. The addition-cure gel cures with no condensation by-products and extremely low outgassing, so it does not contaminate activated carbon beds.

Q: What quality records come with each batch?

A: Each batch includes COA with viscosity, penetration, cure and color data, plus RoHS/REACH reports, lot traceability and support for customer quality plans and source inspection.

Q: How long does the seal last in a nuclear installation?

A: The gel is engineered for decade-scale service with long-term aging and radiation stability; filters and adsorbers are changed onto the same self-healing gel during outages.

5 Quality Assurance & Certification

Every batch of Hong Ye HY-94 series jelly gel is produced under ISO 9001 certified quality management and tested for viscosity, mix ratio, cure time, penetration, color and tack before release, with a Certificate of Analysis (COA) shipped with every order. Standard grades carry RoHS 2.0 and REACH SVHC test reports; skin-contact and baby-care grades can be supplied with FDA 21 CFR 177.2600 and LFGB Section 30/31 reports and, on request, ISO 10993 biocompatibility testing. Flame-retardant grades meet UL94 V-0. Hong Ye has supplied jelly gel to contractors and manufacturers in over 60 countries since 2005, with batch traceability and multi-language documentation supporting customer qualification and tender processes.

6 Conclusion

The market for tank sealant jelly gel in this application area continues to expand as cleanroom construction, electronic encapsulation, automotive electrification, energy storage and consumer product manufacturing drive demand for reliable two-component addition-cure silicones. Hong Ye supports this growth with ISO 9001 certified production, 500-plus ton monthly capacity, complete compliance documentation and responsive application engineering. Buyers evaluating suppliers should prioritize batch consistency, documentation completeness and technical service responsiveness over unit price alone, as the cost of a sealing or potting failure far exceeds the incremental cost of a quality gel.