JMCUSA Ceramics

JMC (USA), Inc.

Silicon Nitride Ceramics

Heater Protection Tubes
for Molten Aluminum

Pressureless Sintered Silicon Nitride

Max Thermal resistance: 1,200 C
Continuous Thermal Resistance: 1,000 C
Electrical Resistance: 9.2x10⁸ohm·cm (700C)

Standard Dimensions
(Millimeters)

OD	ID	Length (Max.)	Flange
50	40	1,150	*
55	45	1,100	*
60	50	1,150	*
65	55	1,200	*
70	55	1,300	*
80	65	1,200	*
85	70	1,200	*
90	75	1,000	*
95	80	1,000	*
105	90	1,000	*
110	95	1,250	*
115	100	1,250	*
150	135	1,150	*
165	150	1,100	*

* - We can supply any flange size,
consult sales for availability.
JMC can assemble tubes to fit any
heater. Contact us for more
information on special orders.