Symmetric Seal-UNS seriesPolyurethane Seals

NegotiableUpdate on September 13

Model

Nature of the Manufacturer: Manufacturer

Product Category: Polyurethane Seals

Place of Origin: City, Province

Online Consult Contact Information

Overview

Symmetric Seal-UNS series

Product Details

Description

The UNS profile is a U-ring type single acting seal with symmetrical polyurethane lips. It can be used for both rod and piston applications. It is also called U-Cup seals which are used to seal hydraulic fluid (hydraulic U-cup seals) or air (pneumatic U-Cup Seals), which helps create the pressure necessary for the hydraulic and pneumatic power systems to work.

Technical data

Temperature	-30°C/+110°C
Pressure	30 MPa
Speed	0.5 m/s
Medias	Mineral hydraulic oils

Applications

Light and medium load hydraulic reciprocated sealing system. Widely used at industries such as machinery, light machinery, agricultural machinery, injection molding machinery, forklifts, cranes, autos, forestry machinery and mining machinery, etc. Favorable mechanical characteristics even under tough working conditions.

Materials

Polyurethane is a material that has the elastic properties of rubber. The proportion in its composition (diisocyanate, polyol, chain extender) is determined by its properties. This material is characterized by a strong mechanical resistance, good wear resistance, high elastic modulus, good flexibility and a very good ozone and oxidation resistance.

Chemical resistance	Pure aliphatic hydrocarbons (propane, butane) Mineral oils and greases Silicone oils and greases Water up to +50°C
Compatibility issue	Ketones, esters, ethers, alcohols and glycols Hot water, steam, alkalis, amines and acids

Advantages

Optimized sealing effect
Excellent abrasion resistance
Very good wear resistance

high wear resistance, low pressure deformation and excellent anti-extrusion performance

tear resistance especially in bending and tensile

easy installation

no effects to heavy load and rod bending

low friction in low pressure range compare to double seal lip

R≤0.3 R1≤0.5 The surface of piston rod should be polished to 0.8μm Rmax(0.2~0.4μmRa)

R≤0.3 the inner surface of hydro-cylinder should be polished to0.4~3.2μm Rmax (0.1~0.8μmRa)

Item No.	Seals Dimension			Groove Dimension
Item No.	D	d	H	D	d	Ha	Hb	Ring Thickness
UNS-6.3	6.3	16.3	8	6.3	16.3	9	10.5	1.5
UNS-7.1	7.1	17.1	8	7.1	17.1	9	10.5	1.5
UNS-8	8	18	8	8	18	9	10.5	1.5
UNS-9	9	19	8	9	19	9	10.5	1.5
UNS-10	10	20	8	10	20	9	10.5	1.5
UNS-11.2	11.2	21.2	8	11.2	21.2	9	10.5	1.5
UNS-12.5	12.5	22.5	8	12.5	22.5	9	10.5	1.5
UNS-14	14	24	8	14	24	9	10.5	1.5
UNS-15	15	25	8	15	25	9	10.5	1.5
UNS-16	16	26	8	16	26	9	10.5	1.5
UNS-18	18	28	8	18	28	9	10.5	1.5
UNS-20	20	30	8	20	30	9	10.5	1.5
UNS-22.4	22.4	32.4	8	22.4	32.4	9	10.5	1.5
UNS-25	25	35	8	25	35	9	10.5	1.5
UNS-28	28	43	10	28	43	11	12.5	1.5
UNS-30	30	45	10	30	45	11	13	2
UNS-31.5	31.5	46.5	10	31.5	46.5	11	13	2
UNS-35	35	50	10	35	50	11	13	2
UNS-35.5	35.5	50.5	10	35.5	50.5	11	13	2
UNS-40	40	55	10	40	55	11	13	2
UNS-45	45	60	10	45	60	11	13	2
UNS-48	48	63	10	48	63	11	13	2
UNS-50	50	65	10	50	65	11	13	2
UNS-53	53	73	12	53	73	13	13	2
UNS-55	55	75	12	55	75	13	13	2
UNS-56	56	76	12	56	76	13	13	2
UNS-60	60	80	12	60	80	13	13	2
UNS-63	63	83	12	63	83	13	13	2
UNS-65	65	85	12	65	85	13	13	2
UNS-67	67	87	12	67	87	13	13	2
UNS-70	70	90	12	70	90	13	13	2
UNS-71	71	91	12	71	91	13	13	2
UNS-75	75	95	12	75	95	13	13	2
UNS-80	80	100	12	80	100	13	13	2
UNS-85	85	105	12	85	105	13	16	3
UNS-90	90	110	12	90	110	13	16	3
UNS-95	95	115	12	95	115	13	16	3
UNS-100	100	120	12	100	120	13	16	3
UNS-105	105	125	16	105	125	17	20	3
UNS-106	106	126	16	106	126	17	20	3
UNS-110	110	130	16	110	130	17	20	3
UNS-112	112	132	16	112	132	17	20	3
UNS-118	118	138	16	118	138	17	20	3
UNS-120	120	140	16	120	140	17	20	3
UNS-125	125	145	16	125	145	17	20	3
UNS-130	130	150	16	130	150	17	20	3
UNS-140	140	160	16	140	160	17	20	3
UNS-150	150	170	16	150	170	17	20	3