MONO Spring Type U

SKU ALS 122NB Category Mechanical Seals

Technical data / STANDARD MATERIALS

Metal Parts : 316 Stainless Steel.
Springs : Alloy 20.
O-Ring : Fluorocarbon installed. Ethylene propylene(EP) or Kalrez1 available upon request.
Rotating Face : Carbon, Solid Tungsten Carbide or Silicon Carbide available upon request.
Stationary Face : Alumina Ceramic, Solid Tungsten Carbide or Silicon Carbide.

※ Other Materials on Special Order.

Applications

All types of rotary equipment, pumps,marine, mixers, agitators and compressors in a variety of service applications.
Suitable for most general and light chemical duties ranging from water to weak acid solutions, wherever elastomer secondary seals can be used.
SEA WTR Supply Pump for Nuclear & Thermal Power Plant.

Operating Conditions

Temperature : -40℃ to + 200℃ / -40℉ to + 390℉Depending on materials used
Pressure : Up to 10kg/C㎡
Speed : Up to 10m/sec

Size in Millimeters

Shaft Dia	D1	D2	D3	D4	L1	L2	L3
020	34	36	30	36	43	11	8
022	36	38	32	38	44	11	8
025	39	41	35	41	46	12	9
028	42	44	38	44	46	12	9
030	44	46	40	46	48	13	10
032	46	48	42	48	48	13	10
035	49	51	45	51	50	13	10
038	54	58	48	54	50	13	10
040	56	60	50	56	52	14	11
042	58	62	52	58	52	14	11
045	61	65	55	61	52	14	11
048	64	68	58	64	59	15	12
050	66	70	60	66	59	15	12
052	68	72	62	68	63	15	12
055	71	75	65	71	63	15	12
058	76	83	70	76	66	15	12
060	78	85	72	78	68	16	13
062	80	87	74	80	68	16	13
065	83	90	77	83	71	16	13
068	86	93	80	86	72	16	13
070	90	95	81	90	73	18	15
075	95	104	86	95	74	18	15
080	100	109	91	100	76	18	15
085	105	114	96	105	77	18	15
090	110	119	101	110	78	18	15
095	115	124	106	115	80	18	15
100	120	129	116	125	81	21	17

Dongsuh Industry Visits Thailand Partner to Strengthen Strategic Energy Market Expansion

August 5, 2026

30 Years of Resilience: Why the “Invisible Details” Matter in Global Infrastructure

April 19, 2026

Expanding into Indonesia’s Power Market with KOMIPO! Successful Technical Presentation for ‘Field-Tested Overseas Commercialization’

November 13, 2025

Targeting Vietnam’s Energy Market with Western Power! Joining the ‘Overseas Market Exploration Mission’ to Promote Core Technologies

August 28, 2025

A New Beginning: Dongsuh Industry Hosts the ‘2025 Long Service Awards’

July 24, 2025

Patents Advanced Graphite Pressure Seal Ring Technology

February 22, 2024

Contact Us

Since our founding in 1993, we have remained at the forefront of the sealing industry.

MONO Spring Type U

MONO Spring Type U

Technical data / STANDARD MATERIALS

Applications

Operating Conditions

Categories

Recent Posts

Dongsuh Industry Visits Thailand Partner to Strengthen Strategic Energy Market Expansion

30 Years of Resilience: Why the “Invisible Details” Matter in Global Infrastructure

Expanding into Indonesia’s Power Market with KOMIPO! Successful Technical Presentation for ‘Field-Tested Overseas Commercialization’

Targeting Vietnam’s Energy Market with Western Power! Joining the ‘Overseas Market Exploration Mission’ to Promote Core Technologies

A New Beginning: Dongsuh Industry Hosts the ‘2025 Long Service Awards’

Patents Advanced Graphite Pressure Seal Ring Technology

LinkedIn

Contact Us

Shaft Dia	D1	D2	D3	D4	L1	L2	L3
020	34	36	30	36	43	11	8
022	36	38	32	38	44	11	8
025	39	41	35	41	46	12	9
028	42	44	38	44	46	12	9
030	44	46	40	46	48	13	10
032	46	48	42	48	48	13	10
035	49	51	45	51	50	13	10
038	54	58	48	54	50	13	10
040	56	60	50	56	52	14	11
042	58	62	52	58	52	14	11
045	61	65	55	61	52	14	11
048	64	68	58	64	59	15	12
050	66	70	60	66	59	15	12
052	68	72	62	68	63	15	12
055	71	75	65	71	63	15	12
058	76	83	70	76	66	15	12
060	78	85	72	78	68	16	13
062	80	87	74	80	68	16	13
065	83	90	77	83	71	16	13
068	86	93	80	86	72	16	13
070	90	95	81	90	73	18	15
075	95	104	86	95	74	18	15
080	100	109	91	100	76	18	15
085	105	114	96	105	77	18	15
090	110	119	101	110	78	18	15
095	115	124	106	115	80	18	15
100	120	129	116	125	81	21	17

Shaft Dia	D1	D2	D3	D4	L1	L2	L3
020	34	36	30	36	43	11	8
022	36	38	32	38	44	11	8
025	39	41	35	41	46	12	9
028	42	44	38	44	46	12	9
030	44	46	40	46	48	13	10
032	46	48	42	48	48	13	10
035	49	51	45	51	50	13	10
038	54	58	48	54	50	13	10
040	56	60	50	56	52	14	11
042	58	62	52	58	52	14	11
045	61	65	55	61	52	14	11
048	64	68	58	64	59	15	12
050	66	70	60	66	59	15	12
052	68	72	62	68	63	15	12
055	71	75	65	71	63	15	12
058	76	83	70	76	66	15	12
060	78	85	72	78	68	16	13
062	80	87	74	80	68	16	13
065	83	90	77	83	71	16	13
068	86	93	80	86	72	16	13
070	90	95	81	90	73	18	15
075	95	104	86	95	74	18	15
080	100	109	91	100	76	18	15
085	105	114	96	105	77	18	15
090	110	119	101	110	78	18	15
095	115	124	106	115	80	18	15
100	120	129	116	125	81	21	17

MONO Spring Type U

MONO Spring Type U

Technical data / STANDARD MATERIALS

Applications

Operating Conditions

Categories

Recent Posts

Dongsuh Industry Visits Thailand Partner to Strengthen Strategic Energy Market Expansion

30 Years of Resilience: Why the “Invisible Details” Matter in Global Infrastructure

Expanding into Indonesia’s Power Market with KOMIPO! Successful Technical Presentation for ‘Field-Tested Overseas Commercialization’

Targeting Vietnam’s Energy Market with Western Power! Joining the ‘Overseas Market Exploration Mission’ to Promote Core Technologies

A New Beginning: Dongsuh Industry Hosts the ‘2025 Long Service Awards’

Patents Advanced Graphite Pressure Seal Ring Technology

LinkedIn

Contact Us

Select Language

Contact Us

Headquarters & Factory

Shaft Dia	D1	D2	D3	D4	L1	L2	L3
020	34	36	30	36	43	11	8
022	36	38	32	38	44	11	8
025	39	41	35	41	46	12	9
028	42	44	38	44	46	12	9
030	44	46	40	46	48	13	10
032	46	48	42	48	48	13	10
035	49	51	45	51	50	13	10
038	54	58	48	54	50	13	10
040	56	60	50	56	52	14	11
042	58	62	52	58	52	14	11
045	61	65	55	61	52	14	11
048	64	68	58	64	59	15	12
050	66	70	60	66	59	15	12
052	68	72	62	68	63	15	12
055	71	75	65	71	63	15	12
058	76	83	70	76	66	15	12
060	78	85	72	78	68	16	13
062	80	87	74	80	68	16	13
065	83	90	77	83	71	16	13
068	86	93	80	86	72	16	13
070	90	95	81	90	73	18	15
075	95	104	86	95	74	18	15
080	100	109	91	100	76	18	15
085	105	114	96	105	77	18	15
090	110	119	101	110	78	18	15
095	115	124	106	115	80	18	15
100	120	129	116	125	81	21	17