Perfluoroelastomer (FFKM) Kalrez® O-rings (0.040-0.070 Section)

Perfluoroelastomer (FFKM) Kalrez® O-Rings (0.040–0.070 Section): Micro-Scale Sealing for High-Purity Plasma and Chemical Applications

Perfluoroelastomer (FFKM) Kalrez® O-Rings (0.040–0.070 section) from TFM are engineered for ultra-compact sealing in high-temperature and high-purity environments such as semiconductor processing, plasma chambers, and chemical analysis systems. Fabricated using Kalrez® 4079, these O-rings deliver unmatched resistance to aggressive chemicals, reactive gases, and harsh vacuum conditions while operating at continuous temperatures up to 316°C.

The 0.040–0.070 inch cross-sectional range is ideal for ultra-fine sealing points where space is extremely limited but failure is not an option. These O-rings maintain their form and sealing properties through thermal cycling, ensuring stable performance in CVD, etching, and gas delivery systems.

Product Specifications:

• Material: Kalrez® 4079 (Perfluoroelastomer, FFKM)

• Color: Black

• Durometer: 75 Shore A

• Cross-Section Range: 0.040″ to 0.070″

• Temperature Range: –19°C to +316°C (continuous), short-term excursions above this limit

Key Benefits:

• Exceptional chemical resistance to acids, bases, solvents, and plasma environments

• Minimal outgassing and weight loss, ideal for UHV and cleanroom systems

• Low compression set, even after prolonged high-temperature exposure

• Precision sealing for micro instrumentation and gas lines

• Compatible with dry and wet semiconductor processing environments

Limitations:

• Not recommended for use with hot water or steam

• Avoid contact with hot aliphatic amines, ethylene oxide, and propylene oxide

Typical Applications:

• Micro-sealing in plasma etchers, ALD/CVD tools, and semiconductor subassemblies

• High-purity gas distribution modules and pressure regulators

• Miniature UHV systems, analytical instruments, and chemical containment

• Valve seats and O-ring glands in confined high-temperature areas

TFM’s Kalrez® FFKM O-Rings (0.040–0.070 section) offer the highest performance available for micro-sealing tasks where chemical purity, thermal endurance, and dimensional precision are critical to system integrity.

Ordering Table 

Drawing	Reference	O-Ring Size	O-Ring Material	O-Ring OD	O-Ring ID	O-Ring Cross Section	O-Ring Color	Part Number
	O-ring Seals, Kalrez	001	4079 Kalrez	0.109	0.029	0.040	Black	O-K001
	O-ring Seals, Kalrez	002	4079 Kalrez	0.142	0.042	0.050	Black	O-K002
	O-ring Seals, Kalrez	003	4079 Kalrez	0.176	0.056	0.060	Black	O-K003
	O-ring Seals, Kalrez	004	4079 Kalrez	0.210	0.070	0.070	Black	O-K004
	O-ring Seals, Kalrez	005	4079 Kalrez	0.241	0.101	0.070	Black	O-K005
	O-ring Seals, Kalrez	006	4079 Kalrez	0.254	0.114	0.070	Black	O-K006
	O-ring Seals, Kalrez	007	4079 Kalrez	0.285	0.145	0.070	Black	O-K007
	O-ring Seals, Kalrez	008	4079 Kalrez	0.316	0.176	0.070	Black	O-K008
	O-ring Seals, Kalrez	009	4079 Kalrez	0.348	0.208	0.070	Black	O-K009
	O-ring Seals, Kalrez	010	4079 Kalrez	0.379	0.239	0.070	Black	O-K010
	O-ring Seals, Kalrez	011	4079 Kalrez	0.441	0.301	0.070	Black	O-K011
	O-ring Seals, Kalrez	012	4079 Kalrez	0.504	0.364	0.070	Black	O-K012
	O-ring Seals, Kalrez	013	4079 Kalrez	0.566	0.426	0.070	Black	O-K013
	O-ring Seals, Kalrez	014	4079 Kalrez	0.629	0.489	0.070	Black	O-K014
	O-ring Seals, Kalrez	015	4079 Kalrez	0.691	0.551	0.070	Black	O-K015
	O-ring Seals, Kalrez	016	4079 Kalrez	0.754	0.614	0.070	Black	O-K016
	O-ring Seals, Kalrez	017	4079 Kalrez	0.816	0.676	0.070	Black	O-K017
	O-ring Seals, Kalrez	018	4079 Kalrez	0.879	0.739	0.070	Black	O-K018
	O-ring Seals, Kalrez	019	4079 Kalrez	0.941	0.801	0.070	Black	O-K019
	O-ring Seals, Kalrez	020	4079 Kalrez	1.004	0.864	0.070	Black	O-K020
	O-ring Seals, Kalrez	021	4079 Kalrez	1.066	0.926	0.070	Black	O-K021
	O-ring Seals, Kalrez	022	4079 Kalrez	1.129	0.989	0.070	Black	O-K022
	O-ring Seals, Kalrez	023	4079 Kalrez	1.191	1.051	0.070	Black	O-K023
	O-ring Seals, Kalrez	024	4079 Kalrez	1.254	1.114	0.070	Black	O-K024
	O-ring Seals, Kalrez	025	4079 Kalrez	1.316	1.176	0.070	Black	O-K025
	O-ring Seals, Kalrez	026	4079 Kalrez	1.379	1.239	0.070	Black	O-K026
	O-ring Seals, Kalrez	027	4079 Kalrez	1.441	1.301	0.070	Black	O-K027
	O-ring Seals, Kalrez	028	4079 Kalrez	1.504	1.364	0.070	Black	O-K028
	O-ring Seals, Kalrez	029	4079 Kalrez	1.629	1.489	0.070	Black	O-K029
	O-ring Seals, Kalrez	030	4079 Kalrez	1.754	1.614	0.070	Black	O-K030
	O-ring Seals, Kalrez	031	4079 Kalrez	1.879	1.739	0.070	Black	O-K031
	O-ring Seals, Kalrez	032	4079 Kalrez	2.004	1.864	0.070	Black	O-K032
	O-ring Seals, Kalrez	033	4079 Kalrez	2.129	1.989	0.070	Black	O-K033
	O-ring Seals, Kalrez	034	4079 Kalrez	2.254	2.114	0.070	Black	O-K034
	O-ring Seals, Kalrez	035	4079 Kalrez	2.379	2.239	0.070	Black	O-K035
	O-ring Seals, Kalrez	036	4079 Kalrez	2.504	2.364	0.070	Black	O-K036
	O-ring Seals, Kalrez	037	4079 Kalrez	2.629	2.489	0.070	Black	O-K037
	O-ring Seals, Kalrez	038	4079 Kalrez	2.754	2.614	0.070	Black	O-K038
	O-ring Seals, Kalrez	039	4079 Kalrez	2.879	2.739	0.070	Black	O-K039
	O-ring Seals, Kalrez	040	4079 Kalrez	3.004	2.864	0.070	Black	O-K040
	O-ring Seals, Kalrez	041	4079 Kalrez	3.129	2.989	0.070	Black	O-K041
	O-ring Seals, Kalrez	042	4079 Kalrez	3.379	3.239	0.070	Black	O-K042
	O-ring Seals, Kalrez	043	4079 Kalrez	3.629	3.489	0.070	Black	O-K043
	O-ring Seals, Kalrez	044	4079 Kalrez	3.879	3.739	0.070	Black	O-K044
	O-ring Seals, Kalrez	045	4079 Kalrez	4.129	3.989	0.070	Black	O-K045
	O-ring Seals, Kalrez	046	4079 Kalrez	4.379	4.239	0.070	Black	O-K046
	O-ring Seals, Kalrez	047	4079 Kalrez	4.629	4.489	0.070	Black	O-K047
	O-ring Seals, Kalrez	048	4079 Kalrez	4.879	4.739	0.070	Black	O-K048
	O-ring Seals, Kalrez	049	4079 Kalrez	5.129	4.989	0.070	Black	O-K049
	O-ring Seals, Kalrez	050	4079 Kalrez	5.379	5.239	0.070	Black	O-K050