1、Feature：Twisted type spacer has sealed performance even under high temperature、high pressure、low temperature、cold vacuum and operation parameter violently vary. Its structure is reasonable and has good press spring performance, and the material、structure and size of spacer can be changed according to the need of customers.

2、Usage：It is applied for airproof of connection part of standard pipe flange、valve、pressure container and heat exchanger

3、Specification：

flange nominal diameter	Pn1.0				Pn1.6				Pn2.5				T
	D1	D2	D3	D4	D1	D2	D3	D4	D1	D2	D3	D4
Dg10	10	21	32	47	10	21	32	47	10	21	32	47	4.5
15	14	26	40	52	14	26	40	52	14	26	40	52
20	20	33	47	62	20	33	47	62	20	33	47	62
25	27	40	53	72	25	40	53	72	25	40	53	72
32	33	51	67	83	33	51	67	83	33	51	67	83
40	40	53	70	93	40	53	70	93	40	53	70	93
50	51	65	83	108	51	65	83	108	51	65	83	108
70	-	-	-	-	-	-	-	-	-	-	-	-
80	80	96	117	143	80	96	117	143	80	96	117	143
100	98	120	140	163	98	120	140	163	98	120	140	169
125	123	146	168	193	123	146	168	193	123	146	168	197
150	148	170	196	219	148	170	196	219	148	170	196	227
175	179	205	232	249	179	205	232	249	179	205	232	257
200	204	230	255	274	204	230	255	274	204	230	255	287
225	228	257	285	304					228	238	264	313
250	256	282	310	328	256	282	310	332	256	282	310	343
300	305	333	361	379	305	333	361	387	305	333	361	403
350	353	387	419	439	353	387	419	447	353	387	419	460
400	400	436	468	488	400	436	468	498	400	436	468	520
450	452	488	524	543	452	488	524	558	452	488	524	570
500	503	539	575	598	503	539	575	629	503	539	575	623
600	604	640	676	698	604	640	680	698	604	640	680	734