Naigai Hanenite Anti-vibration Rubber

Made in Japan
Manufacturer: Naigai Rubber Industry Co.,Ltd
Product name: Hanenite Anti-vibration Rubber

HANENITE vibration suppression rubber has excellent performances of absorbing shocks and vibrations. Even when an external force is applied, the rubber absorbs the energy with almost no repulsion. Moreover, the material boasts excellent physical properties and durability, on par with those of normal rubber. As a result, this rubber does not bounce when it falls, defying the conventional expectations of rubber’s behavior.

・Excellent vibration damping performance at room temperature (5 to 35℃)!

The repulsion elasticity is less than 10%, excluding CP-S, indicating a significantly reduced bounce-back effect in comparison to other materials.

・A lineup with +α characteristics!

Excluding CP, the capability to cut and punch sheet materials remains achievable, thus enhancing its versatility in practical applications.

CP-S: Can be used up to -20℃.

・Free shapes created by excellent workability!

This material can be molded using the same methods applied to general rubber, demonstrating its flexible manufacturing potential.

Strong adhesion to metal is possible.

Apart from CP, the ability to cut and punch sheet materials is indeed possible, thereby broadening its range of practical uses.

The sponge sheet is notably lightweight!

Closed cell vibration damping sponge with a specific gravity of 0.3.

・Environmental measures initiatives

Rohs Directive: Compatible with all grades

REACH regulations: Compliant except for flame retardant grades (GP-40HBE, GP-50V)

Hanenite Anti-vibration Rubber

Examples of commonly used locations

・For impregnation of motor coils for air conditioners and refrigerators

・For coil impregnation of other sealed motors, etc.

Usage form	Target example	Main features	Application example
supporting parts	Precision equipment support material	vibration isolation	OA printer legs, facsimile legs
	Vibrating body support material		VTR motor mount
			Washing machine rubber legs, industrial sewing machine legs
		impact insulation	Commercial mochi pounding machine support legs
		Vibration isolation/resonance prevention	Parts feeder anti-vibration mat
	floating floor supports	impact insulation	Soundproof/vibration proof floor support rubber, OA floor
	AV equipment support material	Vibration isolation/resonance prevention	VTR rubber legs, anti-vibration rubber for in-vehicle AV equipment
			CD player insulator
Laminated members	shoe midsole	shock absorption	Golf shoes, luxury women’s shoes
	Cushioning material for sports		baseball glove internal cushion
	vibration damping sheet	vibration absorption	Handy VTR built-in motor section
Buffer member	Vibrating body holding grip	vibration isolation	Impact wrench, brush cutter, jackhammer
	memory foam stopper	Collision object low rebound stop	Automatic production line/parts tray
			Rubber for pachinko ball stoppers
			Vending machine coin stopper
	memory foam cushion	Impact acceleration reduction	Keyboard, PPC development section
			Printer head section
			Passenger car center console part
impact insulation	rubber seal	vibration isolation	Industrial sewing machine table part
			CT scanner camera mounting part
	holder	impact insulation	hand microphone internal holder
			Microphone holder with built-in radio cassette player

Varieties and characteristics

*GP-50V is a UL94-V0 compliant product. GP-40HBE is equivalent to UL94-HB.

Product type	Unit
Product type	Unit	GP 35LE	GP 60LE	MP40	CP40S	CP55S	GP 40HB	GP50V	OP40	Sponge
Mechanical properties
Hardness （typeA)		33	49	39	36	49	43	50	35	24 (SRIS C)
Tensile strenght	Mpa	11.9	8.5	6.0	8.8	9.8	8.1	7.2	14.7	1.5
〃	kgf /cm2	121	87	61	90	100	83	73	150	15
Elongation	%	790	630	500	1000	830	700	710	820	500
Tear strengh	kN /m	15.4	19.2	16.9	22.4	25.6	15.5	16.4	19.7	6.2
〃	kgf /cm	15.7	19.6	17.2	22.8	26.1	15.8	16.7	20.1	6.3
Repilsion slasticity	%	2	4	4	10	10	5	5	9	5
Compression permanent set 70℃×22Hr	%	9	18	13	29	25	11	25	9	–
Static shear elastic modulus	Mpa	0.17	0.41	0.27	0.23	0.44	0.38	0.43	0.30	0.04
〃	kgf /cm2	1.7	4.2	2.8	2.3	4.5	3.9	4.4	3.9	0.74
Specific gravity		1.26	1.27	1.35	1.09	1.2	1.35	1.4	1.18	–
Heat resistance Air-heated aging test conditions:70℃×96Hr
Rate of change in strength	%	-7	-8.1	-11	-3	+2	-2	+3	+1	-2.0
Rate of change in elongstion	%	-1.7	-7.0	-6.9	+16	-8.1	+16	+18	-38	+170
change in hardness	%	+2	+16	+8	+3	+2	-2	+3	+1	–
Oilproof and waterproof Swelling test conditions:Weight change rate (%)after 40℃×24Hr
JIS#1 Oil		○	○	○	○	○	○	○	○	○
JIS#3 Oil		○	○	○	○	○	○	○	○	○
Fuel C		○	○	×	×	×	×	○	○	×
Fuel D		○	○	×	×	×	×	○	○	×
Pure wate		○	○	○	○	○	○	○	○	○
Cold-resistance 　　　　　　Tg（℃）　100Hz
Tg	℃	18	21	12	-9	10	11	11	15	20
Ozone-resistance　　　　　　　　　　　　Ozon-resistance test conditions:50pphm×40℃×20%elongation
24Hr		N.C.	N.C.	N.C.	C-4	N.C.	A-1	C-4	N.C.	N.C.
48Hr		A-1	B-1	N.C.	–	C-3	A-1	–	N.C.	N.C.
96Hr		A-2	B-3	N.C.	–	–	A-2	–	N.C.	N.C.

※Test methods compliand with the standards shown on the right.

※The measurement values are not guranteed performance values.

Vibration supperession performances

Hanenite Anti-vibration Rubber

Standard sheet size table

	GP35LE	GP60LE	MP40	CP40S (BTO	CP55S (BTO	OP40	GP40HB	GP50V	Sponge
Thickness(mm) Depth*width(mm)
0.5	350*500	–	–	–	–	–	–	350*500	–
1	350*500	350*500	250*250	250*250	250*250	350*500	350*500	350*500	350*500
1.5	–	–	–	–	–	–	350*500	350*500	350*500
2	350*500	350*500	350*500	250*250	250*250	350*500	350*500	350*500	350*500
3	350*500	350*500	350*500	250*250	250*250	350*500	350*500	350*500	350*500
5	350*500	350*500	350*500	250*250	250*250	350*500	350*500	–	350*500
10	350*500	350*500	350*500	250*250	250*250	350*500	–	–	350*500
12	–	–	–	–	–	–	–	–	350*500
15	250*250	250*250	250*250	250*250	250*250	–	–	–	–
20	250*250	250*250	250*250	250*250	250*250	–	–	–	–
30	250*250	250*250	–	250*250	250*250	–	–	–	–