IUIS type Special Packing for Rod Seals

Dimension

Special Packing for Rod Seals
R = 0.3 or below, R₁ = 0.5 or below, R₂ = 1
The surface of the rod should be finished by buffing (SPBF) to 0.8 to 1.6 μmRz (0.2 to 0.4 μmRz).
•The roughness is JIS B 2601 : 2001. When regulation length cannot be kept, apply Pt.

How to Determine  B dimension
■ When using backup ring. Please determine B dimension according to the table below.

Maximum Service Pressure	14MPa	21MPa	35MPa
Material of Backup ring	19YF
B dimension	B ≦ ø D + 1.0	B ≦ ø D + 0.5	B ≦ ø D + 0.2

 

Maximum Service Pressure	35MPa	42MPa
Material of Backup ring	80NP
B dimension	B ≦ ø D + 0.8	B ≦ ø D + 0.4

■ When not using backup ring.
To determine B dimension, please refer to the graph in the right for the maximum extrusion gap (one side)
considering the eccentricity of operating condition of the rod.
                                                                                                                                                              
Specification Table
IUSI type Iron rubber (PUR)
Material : Standard : NOK U801  /  Heat Resistant type : NOK U641

Nominal size of Packing, and Housing dimensions						Packing Part Number		Combination Backup Ring Part Number
d	D	h	HA	HB	C	Standard (U801)	Heat Resistant (U641)	BRT2 (Bias-cut) 19YF	BRN2 (Bias-cut) 80NP
18	26	5	5.7	7.7	2	FU0180R0	FU0180R1	GN4778V0	GN9106O0
22.4	30	5	5.7	7.7	2	FU0260R0	FU0260R1	GN4784V0	GN9112O0
28	35.5	5	5.7	8.7	2.5	FU0320R0	FU0320R1	GN4791V0	GN9119O0
30	40	6	7	10	2.5	FU0357R0	FU0357R1	GN4794V0	GN9122O0
35	45	6	7	10	2.5	FU0424R1	FU0424R2	GN4799V0	GN9127O0
35.5	45	6	7	10	2.5	FU0451R0	FU0451R1	GN4801V0	GN9129O0
40	50	6	7	10	2.5	FU0497R0	FU0497R1	GN4050V0	GN9131O0
45	55	6	7	10	2.5	FU0567R1	FU0567R2	GN4804V0	GN9133O0
45	56	7	8	11	2.5	FU0572R0	FU0572R1	GN4805V0	GN9134O0
50	60	6	7	10	2.5	FU0619R0	FU0619R1	GN4335V0	GN9138O0
55	65	6	7	10	2.5	FU0694R1	FU0694R2	GN4810V0	GN9141O0
56	66	6	7	10	2.5	FU0722R0	FU0722R1	GN4766V0	GN9143O0
70	80	6	7	10	2.5	FU0849R1	FU0849R0	GN4651V0	GN9092O0
80	90	6	7	10	2.5	FU0939R0	FU0939R1	GN4820V0	GN9155O0
85	100	9	10	13	4	FU0984R0	FU0984R1	GN4687V0	GN9091O0
90	105	9	10	13	4	FU1024R0	FU1024R1	GN4698V0	GN9158O0
95	110	9	10	13	4	FU1051R0	FU1051R1	GN4822V0	GN9160O0
100	115	9	10	13	4	FU1082R0	FU1082R1	GN4512V0	GN9163O0
125	140	9	10	13	4	FU1252R0	FU1252R1	GN4481V0	GN9170O0
130	145	9	10	13	4	FU1280R1	FU1280R0	GN4628V1	GN9742O1
140	155	9	10	13	4	FU1323R0	FU1323R1	GN4526V0	GN9410O0
160	175	9	10	14	4	FU1406R0	FU1406R1	GN4835V0	GN9180O0
170	185	9	10	14	4	FU1443R2	FU1443R0	GN5464V0	GN9791O0
175	190	9	10	14	4	FU1459R1	FU1459R0	GN4839V0	GN9185O0
180	200	12	13	17	5	FU1483R0	FU1483R1	GN4470V0	GN9187O0