ATMCU Binder-Free Low-Shedding Heat-Resistant HEPA Filter (350°C)

Product Overview

High-temperature HEPA filter rated for continuous service up to 350°C (max 400°C × 1h), designed for depyrogenation tunnels and high-temperature clean processes in pharmaceutical manufacturing. Built with a stainless-steel frame and separator, glass-paper media and glass-fiber sealant — no organic binders — for stable performance through repeated heat cycles. Key features ・Continuous operation up to 350°C, short peak 400°C × 1h ・99.99% @ 0.3 μm filtration efficiency ・Separator-type HEPA construction with stainless-steel support ・All-metal + glass construction — no organic outgassing ・Available in 150 mm (Q) and 290 mm (P) depths ・Binder-free construction: no organic adhesive in media or seal — low particle shedding, no siloxane outgassing Target industries：Pharmaceutical, Medical, Electronics, Power generation, Nuclear power

Features & Specifications

No.	Model	Efficiency	W (mm)	H (mm)	D (mm)	Airflow (CMM)	Airflow (CMH)	Initial PD (Pa)
1	ATMCU-Z-Q-FS4HR	99.99%@0.3μm	305	610	150	11.0	660	250
2	ATMCU-Z-Q-FS4HR	99.99%@0.3μm	457	457	150	12.5	750	250
3	ATMCU-24-Q-FS4HR	99.99%@0.3μm	610	610	150	24.0	1440	250
4	ATMCU-Z-Q-FS4HR	99.99%@0.3μm	915	610	150	36.5	2190	250
5	ATMCU-Z-P-FS4HR	99.99%@0.3μm	305	610	290	16.0	960	250
6	ATMCU-Z-P-FS4HR	99.99%@0.3μm	457	610	290	25.5	1530	250
7	ATMCU-35-P-FS4HR	99.99%@0.3μm	610	610	290	35.0	2100	250
8	ATMCU-Z-P-FS4HR	99.99%@0.3μm	762	610	290	44.0	2640	250

Request a Quote

LINE @baisheng

Email：sales@baisheng-tech.com

Phone：+886-2-25981958

Detailed Description

ATMCU is designed for continuous operation in high-temperature clean processes where standard HEPA filters fail. Its all-inorganic construction (stainless steel + glass) eliminates organic outgassing that could contaminate sensitive processes, making it the filter of choice for depyrogenation tunnels in pharmaceutical manufacturing.

Materials & Construction

Property	Specification
Filter frame	STAINLESS STEEL
Media	GLASS PAPER
Max. temperature	350°C (Max. 400°C/1h)
Separator	STAINLESS STEEL
Gasket	GLASS PAPER
Grille (downstream)	-
Grille (upstream)	-
Sealant	GLASS FIBER
Max airflow	Can be calculated on request
Max final PD (Pa)	500

Airflow vs Pressure Drop (representative)

Representative curves for 610×610 mm units. The 290 mm (P) depth delivers higher airflow at the same pressure drop thanks to a larger pleat area.

Binder-Free, Low-Shedding Construction

A conventional HEPA bonds and seals its media and frame with polyurethane (PU) or silicone, and those sealants are generally rated for long-term service somewhere in the 100–200°C range. Above that, the adhesive first softens and cracks, releasing organic molecules, then embrittles and flakes under repeated thermal cycling — at which point the filter itself becomes a particle source. ATMCU uses no organic adhesive anywhere: sealing is done with glass fiber, the frame and separators are stainless steel, and the entire assembly is metal and glass only.

Component	Conventional adhesive HEPA	ATMCU (binder-free)
Sealant	Polyurethane / silicone	GLASS FIBER
Media bonding	Organic binder	None (glass paper)
Separator	Aluminium foil + hot-melt	STAINLESS STEEL
Outgassing at temperature	Organic molecules, siloxane	None
Shedding after thermal cycling	Rises as adhesive degrades	Stays stable

With no organic adhesive there is nothing to thermally decompose. Two practical consequences follow: - Low particle shedding — degrading, flaking adhesive is the most common source of self-generated particles in high-temperature filters. A binder-free build keeps downstream particle counts from creeping back up as the filter ages through repeated heat-up and cool-down cycles. - No siloxane contamination — silicone seals release siloxane at elevated temperature, and siloxane deposited on wafers, optical surfaces or coated substrates causes hazing and yield loss. Semiconductor, optical coating and OLED processes are particularly sensitive to this. Depyrogenation tunnels cycle up and down in temperature every day and run continuously — the duty cycle where adhesive degradation shows up fastest. A binder-free build keeps ATMCU downstream particle counts consistent across the full service life, avoiding the case where counts rise before the filter ever reaches its terminal pressure drop.

Applications

- Depyrogenation tunnels in pharmaceutical cleanrooms - High-temperature clean ovens for sterile component manufacturing - Terminal filtration in high-temperature process equipment - Power generation and nuclear facility HVAC

Selection Notes

- **150 mm (Q) depth** — choose when installation space is limited or the airflow demand is moderate. - **290 mm (P) depth** — choose when maximum airflow per unit face area is required, or when extended service life matters (larger dust-holding capacity). - Scan-testable as standard; leak-free versions available on request. - Replace when pressure drop reaches 500 Pa (2× initial) or per site maintenance schedule.