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Molded Silicone - Silicone Stoppers

Ultra-pure platinum-cured silicone stoppers outperform standard neoprene and rubber stoppers in critical laboratory applications. These silicone stoppers are autoclavable and will not crack, spallate or release particulates that can cause process contamination.

Manufactured from our own brand of silicone resin, Sani-Tech ® platinum-cured silicone stoppers comply with USP Class VI, USDA, FDA, European Pharmacopoeia 3.1.9 and ISO 10993 standards.

All stoppers can be supplied with cored holes for use with platinum-cured silicone tubing, dip tubes or vents.

See the High-Purity Difference

Platinum-cured silicone stoppers resist cracking and spallation and reduce the possibility of particulate contamination
No pigments or fillers to cause contamination
Biologically safe, per USP Class VI non-cytotoxicity testing parameters


Platinum Cured Silicone Stopper	Green Neoprene Stopper	Black Rubber Stopper

Selection Guide for Silicone Stoppers

Part Number	Size	"A" Inches	"A" MM	"B" Inches	"B" MM	"H" Inches	"H" MM	Volume Inches	Volume CM	Weight Pounds	Weight Grams
4120-1000	000	0.495	12.6	0.333	8.5	0.850	21.6	0.116	1.90	0.005	2.27
4120-1100	00	0.590	15.0	0.410	10.4	0.980	24.9	0.195	3.20	0.008	3.63
4120-1110	0	0.668	17.0	0.518	13.2	0.981	24.9	0.272	4.46	0.012	5.44
4120-0001	1	0.752	19.1	0.555	14.1	1.011	25.7	0.342	5.60	0.015	6.80
4120-0002	2	0.786	20.0	0.634	16.1	0.989	25.1	0.393	6.44	0.017	7.71
4120-0003	3	0.950	24.1	0.725	18.4	0.982	24.9	0.544	8.91	0.023	10.43
4120-0004	4	1.029	26.1	0.800	20.3	0.951	24.2	0.628	10.29	0.026	11.79
4120-0005	5	1.064	27.0	0.913	23.2	0.968	24.6	0.744	12.19	0.031	14.06
4120-0006	6	1.256	31.9	1.041	26.4	0.911	23.1	0.947	15.52	0.040	18.14
4120-0007	7	1.460	37.1	1.198	30.4	0.953	24.2	1.326	21.73	0.056	25.42
4120-0008	8	1.607	40.8	1.289	32.7	1.002	25.5	1.656	27.14	0.070	31.78
4120-0009	9	1.775	45.1	1.474	37.4	0.987	25.1	2.052	33.63	0.086	39.01
4120-0010	10	1.973	50.1	1.669	42.4	0.929	23.6	2.425	39.74	0.102	26.27
4120-0011	11	2.204	56.0	1.913	48.6	0.941	23.9	3.137	51.41	0.032	59.88
4120-0012	12	2.515	63.9	2.126	54.0	1.009	25.6	4.277	70.09	0.184	83.54
4120-0013	13	2.667	67.7	2.284	58.0	0.998	25.3	4.813	78.87	0.207	93.90
4120-0014	14	3.543	90.0	2.953	75.0	1.505	38.2	12.504	204.90	0.538	244.04
4120-0015	15	4.053	102.9	3.260	82.8	1.505	38.2	15.866	260.00	0.682	309.36
4120-0016	16	4.990	126.7	3.543	90.0	20.16	51.2	29.106	476.96	1.252	567.91