Equivalent to:

● John Crane Type 609

Operating Limits:

● Temperature:-75℃ - +350℃

● Pressure：≤ 20bar

● Speed: ≤ 25m/s

● Shaft size: 1"- 4"

Materials:

● Seal Rings: A,B,Q1/12,Q2/22, U1/12,U2/22

● Elastomer: VITON, EPDM, NBR, FFKM, AFLAS

● Metal Part: SS304, SS316, 4J42, 2CR13, AM350, Hastelloy C, Inconel 718

Assembly Dwg:

Dimensions (mm):

Size(inch)	D	D1	L
1.000	1.000	1.625	1.531
1.125	1.125	1.750	1.562
1.250	1.250	1.875	1.593
1.375	1.375	2.000	1.593
1.500	1.500	2.125	1.593
1.625	1.625	2.250	1.593
1.750	1.750	2.375	1.625
1.875	1.875	2.500	1.625
2.000	2.000	2.625	1.656
2.125	2.125	2.750	1.656
2.250	2.250	2.875	1.719
2.375	2.375	3.000	1.719
2.500	2.500	3.250	1.750
2.625	2.625	3.375	1.781
2.750	2.750	3.500	1.781
2.875	2.875	3.687	1.875
3.000	3.000	3.812	1.875
3.125	3.125	4.000	1.875
3.250	3.250	4.125	1.875
3.375	3.375	4.250	1.875
3.500	3.500	4.375	1.875
3.625	3.625	4.500	1.875
3.750	3.750	4.625	1.875
3.875	3.875	4.750	1.875
4.000	4.000	4.875	1.875

*Related Introduction*

Mechanical seal static seal, that is, the mechanical seal with no relative movement between the joint surfaces. From the perspective of a petrochemical plant of moderate size, there are tens of thousands of static seal points. There are many types of sealed media. Most of the dangerous media are flammable, explosive, corrosive or toxic. Once the seal fails, it will not only cause waste, but also pollute the environment, and even cause personal injury and property damage. Therefore, the study of its mechanism and components is of great significance.

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JC 609 Metal Bellows Seals