Replacing the Stainless steel metal below seal from China manufacturer

Replacing the Stainless steel metal below seal

Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: CR687

Production Capacity: 800-1200sets/month

Delivery Date: have ex-stock

Style: Mechanical Seal

Brand Name: John Crane 680

Rotary Ring:: B.Q2.U2

Bellows:: T6

Means of Transport: Ocean,Air;by express

Packing: carton standard exporting ...

Standard or Nonstandard: Standard

Material: Metal

Stationary Ring:: U2,Q2

Secondary Seal:: V.E.P

Spring and Metal parts:: F.G.M

Temperature: -75°C to +290°C / -100°F to +550°F
(depending on material being used)
Pressure : Vacuum to 25 bar / 360 psi
Speed: Up to 25

Metal Bellow Seal John Cran 680
Features

Leader in Bellows Sealing Technology
Sealol Low-Temperature and High-Temperature bellows seals assure low emissions and optimized Mean-Time-Between-Planned-Maintenance (MTBPM).
Superior Bellows Design
These seals are manufactured with a 45º tilt edge at the bellows inside diameter to disperse stresses and maximize operating life.

Superior Plate Shape
The plate shape used by John Crane Sealol is called a nesting ripple. With a three-sweep radius, this plate design allows the bellows device to be flexed repeatedly without the metal being stressed beyond its endurance limit.

Self-Cleaning Design
Rotating bellows throw off suspended particles that clog spring-type seals. This self-cleaning action eliminates the need for external flushing, filters or cyclone separators and their associated costs.

World-class Bellows Manufacture
Our bellows production facility has an outstanding manufacturing process with state-of-the-art stamping,welding and testing technology.

Application Flexibility
A wide range of metallurgies, face combinations and packing materials are used to seal a variety of demanding applications.

Advanced Research and Development
The Sealol bellows incorporate all of the design features resulting from key engineering competencies, such as metallic thin shell methodology, tribology and fluid sealing technology, and thin film/fluid mechanics.

Operational conditions:		Materials
temperature	-75℃ to +200℃	Stationary ring	U2,Q2
Pressure	<<2.0mpa< div="">	Rotary ring	B,Q2,U2
Speed	<<23m/s	Secondary seal	V,E,P
Bellow	T6	Spring and metal parts	F,G,M
Application: Oil,light hydrocarbon,aromatic Hydrocarbon,organic solvents,weakacids,ammonia etc

Low Temperature, General Duty Alloy-20 Metal Bellows Shaft Seal as John Crane 680 type

SIZE	d	D3	L1	SIZE	d	D3	L1
0.750	0.750	1.312	1.250	18	18	32.00	27.7
0.875	0.875	1.437	1.250	20	20	33.30	27.7
0.937	0.937	1.500	1.250	22	22	36.00	27.7
1.000	1.000	1.562	1.250	24	24	38.10	30.2
1.125	1.125	1.687	1.250	25	25	39.00	30.2
1.250	1.250	1.812	1.312	28	28	42.00	32.7
1.375	1.375	1.937	1.437	30	30	44.00	32.7
1.500	1.500	2.063	1.437	32	32	46.00	32.7
1.625	1.625	2.187	1.437	33	33	47.00	32.7
1.750	1.750	2.312	1.437	35	35	49.20	32.7
1.875	1.875	2.437	1.500	38	38	52.40	34.2
2.000	2.000	2.562	1.500	40	40	55.60	34.2
2.125	2.125	2.687	1.500	43	43	58.70	34.2
2.250	2.250	2.812	1.562	45	45	58.70	34.2
2.375	2.375	2.937	1.562	48	48	61.90	34.2
2.500	2.500	3.187	1.562	50	50	65.10	34.7
2.625	2.625	3.312	1.625	53	53	68.30	34.7
2.750	2.750	3.437	1.625	55	55	71.00	34.7
2.875	2.875	3.625	1.687	60	60	74.60	39.7
3.000	3.000	3.750	1.687	65	65	84.10	39.7
3.125	3.125	3.875	1.750	70	70	87.30	45.2
3.250	3.250	4.000	1.750	75	75	95.30	45.2
3.375	3.375	4.125	1.750	80	80	98.40	44.7
3.500	3.500	4.250	1.875	85	85	104.80	44.7
3.625	3.625	4.375	1.875	90	90	108.00	49.7
3.750	3.750	4.500	1.875	95	95	114.30	49.7
3.880	3.880	4.625	1.875	/	/	/	/
4.000	4.000	4.750	1.875	/	/	/	/