Material Type Nirtile / Buna-n BT-1128 Rubber Convoluted Bellow
Nitrile is the most widely used elastomer in the seal industry. The popularity of nitrile is due to its excellent resistance to petroleum products and its ability to be compounded for service over a temperature range of -22°F to 212°F. Nitrile is a copolymer of butadiene and acrylonitrile. Variation in proportions of these polymers is possible to accommodate specific requirements. An increase in acrylonitrile content increases resistance to heat plus petroleum base oils and fuels but decreases low temperature flexibility. Military AN and MS O ring specifications require nitrile compounds with low acrylonitrile content to insure low temperature performance. Nitrile provides excellent compression set, tear, and abrasion resistance. The major limiting properties of nitrile are its poor ozone and weather resistance and moderate heat resistance, but in many application these are not limiting factors.	Temperature Range (dry heat)
	low	high
	- 22F - 30C	212F 300C
	Application Advantages
	» excellent compression set, » superior tear resistance » abrasion resistance
	Bellow Details
	Metric (mm)	Standard (inches)
Primary Uses
Bellows and convoluted rubber dust boots are versatile seals used in a wide range of applications to seal dust and other environmental elements in applications with a stroke or designed range of motion. » Oil resistant applications » Low temperature applications » Fuel systems, automotive, marine, and aircraft » General Industrial Use	Length Max: 420 Length Min: 50 ID Min: 86 OD Max: 130 Connector 1 ID: 78 Connector 2 ID: 130	Length Max: 16.54 Length Min: 1.97 ID Min: 3.39 OD Max: 5.12 Connector 1 ID: 3.07 Connector 2 ID: 5.12
Manufacturers Part Numbers: BT-1128 , BT-78000 , V6-520
Special Order Bellow: This bellow is available as a special order item. Please allow 8-10 weeks for delivery.