KY TYPE 21, John Crane TYPE 21, Elastomer Bellow Shaft Seals

Combined Materials:
Stationary Ring (Alumina 99%/Alumina 99.5%/SiC/SSiC/TC)
Rotary Ring (Carbon/SiC/SSiC/TC)
Secondary Seal (NBR/EPDM/Viton)
Spring and Punched Parts (SS304/SS316)

Working Conditions:
Mediums: Water, oil, and chemical mediums with weak corrosion.
Temperature: -20°C~150°C
Pressure: ≤0.8MPa
Speed: ≤ 10 m/Sec

Preview the KY TYPE 21 PDF File

Download KY TYPE 21, John Crane TYPE 21, Elastomer Bellow Shaft Seals.pdf

If you have any questions, please send us an EMAIL about your technical applications.

Part Numbers	d	D	D1	L1	L2
KY TYPE 21-1/2"	12.7	23.88	25.4	7.92	20.82
KY TYPE 21-5/8"	15.875	26.7	31.75	10.29	22.43
KY TYPE 21-3/4"	19.05	31.09	34.93	10.29	22.43
KY TYPE 21-7/8"	22.225	33.4	38.1	10.29	24
KY TYPE 21-1"	25.4	43.18	41.28	11.1	25.6
KY TYPE 21-1 1/8"	28.575	46.28	44.45	11.1	27.17
KY TYPE 21-1 1/4"	31.75	49.4	47.63	11.1	27.17
KY TYPE 21-1 3/8"	34.925	52.58	50.8	11.1	28.78
KY TYPE 21-1 1/2"	38.1	55.8	53.98	11.1	28.78
KY TYPE 21-1 5/8"	41.275	62.2	60.33	12.7	35.13
KY TYPE 21-1 3/4"	44.45	66	63.5	12.7	35.13
KY TYPE 21-1 7/8"	47.625	66.6	66.68	12.7	38.3
KY TYPE 21-2"	50.8	73	69.85	12.7	38.3
KY TYPE 21-2 1/8"	53.9	73.3	76.2	14.27	43.05
KY TYPE 21-2 1/4"	57.1	78.41	79.38	14.27	43.05
KY TYPE 21-2 3/8"	60.3	82	82.55	14.27	46.25
KY TYPE 21-2 1/2"	63.5	84.87	85.73	14.27	46.25
KY TYPE 21-2 5/8"	66.6	88.4	85.73	15.9	49.4
KY TYPE 21-2 3/4"	69.8	92.58	88.9	15.9	49.4
KY TYPE 21-2 7/8"	73	94.85	95.25	15.9	52.57
KY TYPE 21-3"	76.2	101.9	98.43	15.9	52.57